Jesse is tired of failing math. When it is time for the class to get new math books, instead of getting a student's text, he gets a teacher's edition with all the answers! Instead of reporting this, he uses this, only bringing his D minus average to an A average. When Jesse competes with Penny in math for an award at school for Monster Land tickets, he, of course, beats her by one point. When he finds out Penny's sick aunt died without Penny getting to say goodbye, he starts to feel guilty.......NOT FOR LONG! He says, ""I'm goin' to Monster Land!"" Just as Jesse is about to receive his award, Mister Besser decides to give him a tough math question to show everyone his ""genius,"" which Jesse couldn't figure out, he crashed and burned, forced to give the award to Penny.

Nancy returns from her trip to Mexico ready to show off her tan and her new charm bracelet, but when class starts the kids are more interested in the choosing of the new crossing guards. When Miss Graves selects Polly and Arthur as the new guards, the kids soon discover that both her choices are a nightmare to have helping you cross the road. While Polly insists that every student learns the seven safety tips, Arthur begins charging people to cross at his corner. When Polly is almost hit by an ice-cream truck, Miss Graves learns that Arthur has been charging and forces him to use the money to buy Polly a get well present and when Arthur gets to the crossing the next day, he learns that crossing lights have been installed. Meanwhile Nancy's good luck bracelet goes missing and she tries to find out who has stolen it, only to discover that it was never stolen in the first place, it just got misplaced in her coat.

During a special assembly Jessie gets hungry and buys a packet of chocolate raisins from Arthur, but by the time the pack reaches him there is only one raisin left. As the documentary film Chinook of the North starts, most of the kids fall asleep until Vinnie sees a scene where the Eskimos all strip their clothes off. The film is immediately stopped but everybody is talking about what would have happened in the rest of the film. Back in class Jessie gets so hungry that he ends up eating a used piece of gum from under his desk, but Freddie sees him and soon the whole school is laughing at him. While Jessie tries to make people forget that he is a ""used gum chewer"", Arthur organises a secret screening of Chinook, but the rest of the film turns out to be just as boring as the beginning was and all the kids demand their money back. The next day lunch is cancelled because of a fire in the kitchen and as Miss Graves leaves the room, Jessie teases the other kids by pretending to eat more of t

Nancy is excited when she gets a Fish Book Baggie Baby from the local store, but when she gets to school she finds out that all the other girls bought the Caterpillar design and hides her own bag, embarrassed that it is different. When class starts, Miss Graves has to pick the three students to do a report on Columbus and teams up Jessie with the two smart kids, Polly and Freddie. While Polly and Freddie argue over who will do which part of the report, Jessie does everything he can to get out of doing any work at all. The next day at school, Penny arrives wearing a small fur hat and all the girls love it deciding to get them after school, but in an attempt to be more popular Nancy claims to already have one. When all her attempts to get one of the small hats fails, Nancy ends up with a really big hat that everybody makes fun of, but she ignores the insults and tries to convince everyone that it's a new trend. However when Nancy arrives at school the next day having trimmed her hat down

Arthur loses his ring, but when he goes to the lost and found office to try and find it he finds himself up against Polly who insists on him filling out sheet after sheet of paperwork and decides that it isn't worth the effort. However when Mr Besser comes back on duty, Arthur takes the opportunity to look for his ring, but rather than taking his own ring he takes somebody else's. Signing up to work in the lost and found office, Arthur volunteer Polly for a role as trash monitor and is soon taking whatever he likes from the collection. However when Miss Graves finds Arthur's ring, he demands it back and realises that what he has been doing is wrong, returning all the lost items to their rightful owners. Meanwhile Jessie becomes funny when he buys a book of 101 insults, but on the eve of Mary-Ellen's party he uses up all of the insults and is instantly booed off stage when his improvisation proves to be the unfunniest thing ever.

As the class prepares to go on a school trip to the museum, Arthur has trouble going to the bathroom while other people are in there. Just before the class boards the bus, Mr Besser introduces Johan, an exchange student who will be going on the trip with Miss Graves' class and Nancy is picked to be his chaperone. The kids prepare to board the bus just as the class chaperone, Jessie's mother, arrives and immediately begins humiliating Jessie with various stories and photographs of him. When the group arrives at the museum, Jessie and Vinnie find themselves trying to escape Mrs McCoy who is desperate to pair up with them and Arthur, still in need of a bathroom, ends up partnered with Freddie. As Arthur searches for an empty bathroom, Freddie finds that he has also become kidney shy and the two desperately seek an empty rest room without success until Miss Graves recommends they visit the fourth floor exhibit on ancient napkins, the only place in the museum with an empty bathroom. Meanwhi

Vinnie and Jessie find a list of teachers' phone numbers and decide to prank their teachers, however after Jessie calls Miss Graves, Vinnie is caught pranking Mr Besser and is forced to be his helper for a week. The next day, Miss Graves asks Jessie what his phone number is and he begins to worry that she is going to phone his mom about the phone pranks. In an attempt to intercept the call, Jessie fakes illness in order to stay home and guard the phone, but when he returns to school the next day he learns that Miss Graves only wanted to call his mom to tell her that he had won the perfect attendance award, but seeing as how he missed school she didn't need to call her. Meanwhile Nancy becomes friends with Polly in order to join Penny on a trip to the International Lithuanian Dance Festival, but when Penny has to stay home sick she refuses to come, not wanting to get in the way of the close friendship that Polly thinks has grown between the two girls.

During a visit to the school library, Polly realises how disorganised the librarian Mr Jackson is and volunteers as a Junior Librarian. As Polly begins a strict regime that infuriates the kids, Arthur learns that most of the kids have overdue library books and volunteers to take them off their hands in order to start up his own library. When the others learn of his library they all want to join even though Arthur charges for the books and supplies, but soon Miss Graves stumbles on the library. Polly informs Miss graves that there is no way to tell which books are overdue, nor who has them, and although the suggestion of an amnesty horrifies the Polly, Miss Graves forces Polly to hold one, insisting that she pay the students for each book they return. The next day the class prepares to start a topic on Indians and Arthur buys all the books he can, only to discover that the topic is on the country of India, not the American tribes. As the library amnesty begins, Miss Graves suggests that

As lunch time begins again, all the kids are complaining about the awful lunches that their parents have packed, except for Freddie who is looking forward to his lunch until he discovers he has accidentally brought the wrong bag and his lunch now consists of a bag of potatoes. Martha, the dinner lady, takes Freddie over to the kitchen where she gives him one of the spare meals that the teachers usually have, and Freddie comments that it would be great to get a free lunch every day, a comment that intrigues Arthur. The next day, Arthur pretends to forget his lunch and is given one of the teacher lunches and he decides that this is a good idea, doing it again and again. Martha suspects that Arthur isn't really forgetting his lunch but that he is too poor to afford one and so she and some of the other members of staff hold a collection for his family, however when Miss Graves finds out she makes Arthur donate the goods to real poor families. Meanwhile Nancy learns karate in an attempt to

Nancy arrives at school and immediately begins bragging about her new boyfriend Jeremy, and while the other girls are impressed to begin with, they quickly become bored of Nancy's stories and Tilly begins to doubt that Nancy even has a boyfriend. When Nancy and Jeremy meet up after school she tries to make him change his image and the next day he fails to turn up for their date. When the girls ask to meet Jeremy, Nancy tries to put them off meeting him, worried that he won't turn up, and they become even more certain that Nancy is making the whole thing up. However when the girls eventually do get invited to meet Jeremy, he turns up just as they are leaving, much to the shock of all of them. Meanwhile Jessie starts borrowing Freddie's homework to copy it but is caught out when Miss Graves sets Freddie a special assignment instead of the regular homework.

As Sports Day approaches, Nancy is sure that she will win all the events she enters, but as the flu season hits she becomes increasingly concerned about falling ill and missing the even. However as she tries to protect herself from the germs she ends up losing every event that she had entered and eventually gives up her principles to take part in the potato sack race with Penny who is ill. Meanwhile Jessie injures his nose while rollerblading and uses the injury to get out of doing schoolwork, however when he makes a miraculous recovery to paticipate in Sports Day, Miss Graves makes him water boy as punishment.

During practice for the Chorus recital, the music teacher starts to give birth and practice ends before Arthur can rehearse his solo, and when Mr Besser becomes the new music teacher, things go from bad to worse. However Arthur calls in a few favours and Mr Besser is replaced by the hopeless Mr Jackson who is keen to work on Arthur's solo, until Polly suggests that she and Arthur perform it as a duet. As Arthur grows more and more annoyed with Polly's interfering he decides to change the words, upstaging Polly when the two perform the piece. Meanwhile Jessie cuts the pictures out of the encyclopaedia to get a good grade on his Mammals report, but when his plan to put the pictures back goes wrong, Miss Graves finds out and forces him to clean every book in the library.

Picture Day arrives and Freddie is really proud of his cowboy shirt until he finds out that Polly is wearing one just like it, but his attempts to hide the fact quickly fail and the class makes fun of him all day. However when it finally comes to taking the picture, Miss Graves positions Freddie behind the board giving the name of the class to avoid him being embarrased by the photo. Meanwhile Jessie fakes an allergic reaction to get out of doing the Science test but is forced to do it anyway and fails miserably.

In order to eat the same foods as Penny, Nancy goes to the health store and ends up being scared into trying a totally healthy diet, and soon all of the girls are eating only healthy foods, resisting temptation to eat their favourite foods. Meanwhile Freddie's birthday approaches and in order to get more tickets during the trip to Monster Land, Vinnie and Jessie persuade all of the other kids not to go, however on their first ride on the Bllod Drainer the ride breaks and they are stuck hanging upside down for three hours. When Freddie comes to school the next day, he brings his cake with him to share with the class and while Vinnie and Jessie are too ill to eat any, Nancy gives up her diet to have a piece.

Nancy has a lot of bad luck and learns that Mercury is in Retrograde. This means she might miss a baseball game, but at 2.15 PM everything will be the same again. And poor Freddie had to go to the toilet, but spoils a bit water on his pants, but the kids believe he was peeing in his pants.

The kids are very thrilled to see a new car during their baseball game, until they realize the new car is Mr. Besser's car. He doesn't want the kids to mess with his car. But when Jessie boasts he did it, he is sent to Mr. Karl's class. At first, he thinks it's a nightmare, but because the kids in Mr. Karl's class are dumb, Jessie takes advantage of this punishments and never wants to leave the class. While Jessie is having fun in Mr. Karl's class, the rest of the class is overkilled with fire tests. Arthur knows this and invites kids during the fire tests.

Polly becomes popular when she gets a pony, but as the kids all take turns to meet Snowball they find out that it's not as great as they thought as Polly forces them to answer questions on ponies before she will let them near it. Meanwhile Jessie pretends to have sent his book report to his Nanna and Pop-Pop's by mistake to stop Miss Graves from grading it.

Jessie's mom finds out that the other boys are bullying him and tries to help him out, but only ends up embarrasing him further. Meanwhile Nancy finds out that Jordan is really rich, but the other girls soon get tired of her bragging.

The girls get excited when a new ping-pong table is introduced to the playground, but deciding who gets to play first causes problems as each method of choosing meets with conflict from everyone else. Meanwhile Vinny and Jessie pick up some swear words at the arcade and start using them around school

The Squirrel Girls hold their annual cookie-selling contest for two girls to win places at Squirrel Camp, but Nancy's ruthless tactics to go on camp with Penny end up forcing Penny out of the contest, meaning that Polly wins the other place. Meanwhile Jessie is forced to have all of his shots when Polly decides to check out everyone's medical cards.

Nancy persuades all of the other girls not to try out for a babysitting job so that she is sure to get it, but soon she and little Lara Johnston find out that they hate each other and Nancy gets the sack, but she is too embarrased to tell the others. Meanwhile Arthur sets up a ""personal"" babysitting service but hires the other kids to do the sitting for him.

Nancy is thrilled to be going to her grandparent's in Miami for summer vacation, but when she arrives she soon finds that things aren't as great as they seem. The other guests are boring, the restauraunt is horrible and no matter what Nancy tries she seems destined to be banned from using the pool. However when Polly arrives at the site she and Nancy manage to work together and have a great time, but as the two arrive back at school Nancy is still determined to stay away from Polly as much as possible.

Jessie is worried about failing the eye-test, but his attempts to cheat end up with him having to wear glasses, making it hard for him to see anything. Meanwhile, Nancy and Charlie are competing to be voted best athlete in the class and Nancy thinks she has worked it so that they will tie, but when Jessie is unable to see the ballot paper he accidentally votes for Charlie, winning him the vote.

The kids all get excited about the chance to see the ""Your Body is Changing"" film, until they learn that they have to go with a parent. Jessie thinks he's got away going without a parent until his mom turns up and manages to totally embarrass him, making him miss most of the movie and not finding out where babies come from. Meanwhile Polly opens up her Spoon Hospital for another year, but tragedy strikes when she accidentally breaks lunchlady Martha's serving spoon.

Nancy and Vinny start going out after they find they like each other while cleaning the classroom, but as Nancy thinks everything is going perfectly she discovers that Vinny is cheating on her with another girl. Meanwhile Arthur learns that his aunt is throwing him a surprise pool party but he doesn't know how to swim and signs up for lessons, only to find out that Polly is the teacher.

As Haloween approaches, all the kids are excited about what costumes they are going to be wearing. Vinny and Jessie both agree not to go as Space Beasts, but both then break their promise, however while Vinny comes in a proper Space Beast costume, Jessie's home-made version makes him look more like a mermaid. Mr Besser is determined to go as a pirate, but when Vinny and Jessie teach his parrot bad words they both get found out at the party. Meanwhile Nancy finds out that Penny is going as Little Bo Peep and decides to buy the same costume, but when she arrives at the party she can't find Penny, only a person dressed up as a sheep. Assuming that it must be Penny, the two enter the costume contest together, only to find out too late that it is actually Polly inside the costume.

All the kids are excited as the school fair approaches and every one of them is determined to get their hands on the two bikes up for grabs. As the stalls get under way, it seems that every kid has their own way to try and mnake the most money, however while the others are concerned with running stalls, Arthur is offering to promote each stall if the other kids pay him and then takes all the custom by offering kids the chance to win a stereo if they can knock down the cans at his stall. As havoc prevails at each stall, the kids are all eager to learn who has won the bikes when they find that the hopeless Mr Jackson has collected up all of the money without counting it first.

After tricking Mr Besser with a dollar tied to a piece of string, Vinnie and Jessie are both sentenced to be his helpers. As well as the horror of doing the principal's duty, Jessie also has a spelling test to look forward to until his mom tells him that he is going to have to stay at his Nana and Pop Pop's because she and his father are going away for a few days. Excited at the prospect of missing the test, things aren't as great as they seem when the house is snowed in and the power blacks out. Jessie tries to make the most of it, but as things start to get better his mom arrives to collect him, bringing with him the spelling test so that he can do it on the way home.

The other kids are all amazed when Jordan's baseball skills suddenly start improving and she explains that it is due to Feng Shui and positive chi. Intrigued by the spiritual lifestyle, Nancy becomes obsessed with Feng Shui and soon Miss Graves is forced to humour her new lifestyle and splits the class in two to see whether Feng Shui really has any benefits. With Nancy and Vinnie heading the two sides, the rest of the kids keep switching their minds as to whether Feng Shui works or not, however Nancy's side seems to be having the more luck. However when the others find that Nancy has a pocket mirror in her bag, they accuse her of trying to steal their chi and turn on her, causing the class to revert back to normal.

All of the girls get excited when they see the new Cleopatra hair-style by Simon of London and in an attempt to become more popular, Nancy tells the others that she is going to get her hair cut by Simon. After begging her mom and promising that she won't ask for anything ever again, Nancy finally manages to get to the hair salon, but the resulting style from Nigel the cleaner makes her look more like a poodle. Meanwhile Polly can't stand it when Freddie gets a better grade than her on a paper on butterflies and insists that Miss Graves remarks them, sparking a debate that eventually leads them to Mr Besser's office.

Shocked by Jessie's consistently poor maths scores, Miss Graves recommends him for the remedial program, but rather than attending the lessons Jessie spends the time bowling and going to the cinema. However when he finds out that his improvement is going to be tested, he bribes Sanjay to take the test for him, but the miraculous increase in his scores ends up with Jessie being moved from remedial maths to advanced maths. Meanwhile Polly sets up a stall selling spoons in school but finds that interest amoungst the other kids is low.

In order to not have to perform Mr Flop-Flop the Christmas Bunny at the school play, the kids band together to force Mr Besser to hand over control to them, however the ensuing arguing ends up with Nancy taking control of the play, much to the annoyance of the others. When the day of the performance arrives, Nancy and the others all end up stealing each others lines and although the play is a hit with the parents it turns out to be rather unconventional.

Miss Graves is called to the doctors when it is believed that she has medical problems until it is revealed that it was just a mix-up, however rather than returning to school she decides to take the rest of the day off. Back at school, Mr Besser is forced to take over as the substitute teacher for the class and soon appoints Polly to take over his duties in order to get rid of her infuriating ways. When Vinnie writes an essay in which he calls Mr Besser a cold hearted liver butcher, he thinks that he is going to end up in permanent detention until he realises that he has misspelt Besser, saving himself from punishment.

As election fever hits the school, everybody seems to be running for class president except for Polly who is off ill. When Nancy is made to go round and see how Polly is, she lets slip about the elections and Polly forces herself well again in order to stand for president, forcing the rest of the competition out of the race and winning by default. However when the kids grow tired of Polly's forceful ways, they lead a revolt to force her out of power.

In an attempt to become one of the popular girls, Nancy befriends one of the girls and quickly becomes part of the clique, much to the annoyance of her classmates. However the other girls soon turn on Nancy, forcing her out of the clique and leaving her with no friends. Meanwhile Jessie's mom tries to be more understanding towards her ""class G"" child, however her attempts to bond with him go horribly wrong when she has to present his class report on airplanes.

Relentless in her attempts to incorporate Lithuanian Studies into the curriculum, Polly insists that the school hold a traditional Gazotski folk dance and after much consideration chooses Sanjay to be her partner. Although Sanjay is initially apprehensive, he quickly becomes infatuated with Polly however she is disgusted by his poor dancing skills. Meanwhile the strain of being a teacher is growing too much for Miss Belanchof until Miss Graves helps her become more organised, until one of Miss Graves' lesson plans wins Miss Belanchof a plaque and a cheque for $5,000.

Determined to get tickets for the Sidewalk Boys concert, Nancy turns to Arthur for help and the two weave a plan to get in by pretending to be members of the press. However once inside the two become worried that they will be found out and both leave before the concert has even started, fearing that they will be found out by the security guards.

Vinnie is horrified when he finds out that Mr Besser has married his Aunt Cookie, especially when the two move in and the kids at school find out. However when Vinnie's aunt finds out that Mr Besser is broke she leaves him and relations between Vinnie and Mr Besser return back to normal. Meanwhile Polly forces Nancy, Jordan, Freddie and Miss Belanchof to attend her Fire Safety School, but when the class is tested by the local fire department it is discovered that Polly's teaching methods are not up to scratch as the class has learnt nothing about fire safety but everything about Lithuania.

The kids are all excited about going to Squirrel Camp until they learn that Miss Belanchof is covering for their normal Squirrel Girl leader. While Penny, Nancy and Polly try for their Wilderness Survival badge, Nancy finds herself face to face with a hungry bear but successfully secures her Bravery badge. Meanwhile Squirrel Boy Arthur is having troubles with his shy kidney and in his attempts to concel his problems ends up having to run the 15 miles to earn his Running badge.

Miss Graves asks Nancy and Polly to perpare reports on the cultures of other kids in the class and while Nancy pairs up with Sanjay, Polly ends up choosing Jordan to do her report. While Polly quickly decides that China has no culture other than that stolen from Lithuania, Nancy is fascinated by Indian culture, especially when she finds out that in a past life she lived in an Indian palace, only to later discover that she lived there as a servant. Meanwhile Melanie Belanchof joins the school in Miss Graves class but pupil and teacher fail to see eye to eye until Melanie is by some stroke of luck transferred into the advanced class.

After Jessie terrorises all of the local babysitters, his mom is forced to look for a new sitter and ends up hiring Polly to look after her baby boy. Jessie begs Polly not to tell the other kids, but when Vinnie sees Polly and Jessie together at home, Jessie lies and says that Polly is his girlfriend. The kids at school start to tease him about it, and Jessie is forced to admit that she is actually his sitter, which only leads to greater humiliation.

Nancy is the best kid in the Gardening Club until she has to go to Miami while her grandma has an eye job to make her look younger. While Nancy finds Miami life more exciting than last time, Jordan and Gabrielle become closer friends and foget to look after Nancy's tomatoes. When Nancy returns, her crops have all shrivelled up and her friends are leaving her out of their conversations, but when neither of them wins the Gardening contest they both start to argue and Nancy takes control again.

Fed up with her daughter's lack of respect, Miss Belanchof grounds Melanie and stops her from going out after school. In an attempt to get out of being grounded, Melanie starts sending herself fake party invitations, but when her mom catches on she is forced to sign up for cheerleading practices.

Nancy is embarrassed to learn that she has asthma and tries to hide it from her classmates, but soon finds that she is worried about every little thing that could cause her problems. She goes to see an alternative doctor, Dr Dedorio, who gives her a supposed miracle cure and Nancy begins to believe that she is getting better until she has an asthma attack during a game of soccer. Deciding to start taking her medication again, Nancy quickly recovers and learns that she isn't the only kid in Room 402 with medical problems.

Jessie signs up for the Student Exchange program, hoping that he will be paired with a smart kid who he can copy off. But when Lars arrives from Outer Maledonia, Jessie realises that the echange isn't all that he hoped it would be when Lars takes over his room and turns out to be just as dumb as Jessie is. However things get even worse when Jessie learns that as part of the exchange he will have to spend time in the frozen wastelands of Outer Maledonia, where the only thing to eat is boiled fish and the sled dogs take an instant dislike to him. Meanwhile, Nancy, Penny and Sanjay sign up for Polly's Spoon School but soon find that they can't take the strain.

Fed up that the other kids don't like her, Melanie starts up a Slam Book where people can write comments about each other. To start with, the girls are only writing good things about each other, but soon they start to argue and begin to write nasty things, splitting the group of friends up. Shocked to see the close group of friends falling apart, Miss Graves forces the girls to work together on a class project and after a failed attempt at working alone, they work together and become friends once more.

Nancy finds Mrs. Graves grade book in her backpack and she is determined to find some way of sneaking it back. All Nancy can think about is finding the grade book and about going to the principal's office, but Mrs. Graves finds it and Nancy had her chart book.

Jesse ends up losing a bet to Arthur and has to do anything Arthur says for a whole week, Jesse is at first miserable until he finds out Arthur cheated and Arthur becomes Jesse's slave.

Nancy, Jordan and Gabrielle all see the new Amber Amberset video and come to school dressed like her the next day, but their skimpy dresses and bells infuriate Mr Besser who decides to introduce a school uniform to combat such styles of clothing. But when a ball breaks Mr Besser's window the next day, he is unable to tell who the culprit is because everybody looks the same, and so decides to drop the uniforms. Meanwhile Jessie and Vinnie decide to get earrings, but Jessie chickens out and wears his mom's flower clip-ons instead. Both boys gain the respect of the other kids, until their parents arrive and force them to take them off.

Miss graves starts driving Nurse Pitts to school, but soon fnds sitting in a car with the nurse is no better than working with her. As the strain of the journies begins to show, Jessie and Vinnie take advantage by trying to convince her that she is becoming forgetful by hiding tests and asking for grades for papers that they haven't written. In an attempt to relax, Miss Graves visits a psychiatrist and, realising that the two boys have been stringing her along , decides to get her own back. She also confronts Nurse Pitts about the nightmare car rides and the nurse decides to catch lifts with Miss Belanchof instead. Meanwhile, Nancy is frightened by tales of Billy Woofchuck, a boy who was supposedly killed answering a telephone in a storm, and soon become too scared to even touch a phone while it is raining.