The Bronx Zoo

Matthew arrives at Benjamin Harrison as a sub, inexperienced and unaware of what he's in for. Fed up with a lack of chalk and erasers, Sara keeps pressing for her transfer to another school -- one that's willing to pay for school supplies. Harry tries to help a failing gang leader, Julio, whom he wants to see get into college, but Jack's refusal to change Julio's history grade -- and Julio's not wanting it to be changed -- stand between them. Joe fights tooth and nail to prevent Benjamin Harrison's day care center from being shut down when the conservative school board decides that it glamorizes -- and encourages -- teen pregnancy. Matthew tries to teach, but the students just laugh at him and walk out of his classes... even after he follows Gus' advice on how to get them to stay. Sara demands Joe sign her transfer after a student swipes her copy of ""David Copperfield"" and refuses to return it. Like Sara, Matthew threatens to quit himself when the students turn him into an impromptu da

Benjamin Harrison's decision to hand out free condoms causes a media uproar to the already tense situations -- one that puts Mary Caitlin at odds with the church. Donna is harrassed by an unstable former boyfriend after telling him he is not the father of her child.

Joe makes faculty members take aptitude tests that they must pass in order to continue teaching -- and makes no secret of the fact that he hopes Mr. Kaczmarek will flunk it; Harry's friendship with another professor, Charlie, is jeopardized when Charlie confesses to Harry that the only reason he passed an earlier aptitude test was because he cheated; and Roz struggles to learn how to read.

Jack has a physical for his wife's insurance policy, and is told he's in poor health. Harry unloads a troublemaker, Johnny, in Sara's class, because none of the other English teachers want him. Johnny walks out, and Sara tells him to never come back. Joe finds a way to get rid of Mr. Kaczmarek -- if his students don't pass a test Joe plans to personally give them, so long. Matthew follows Mary Caitlin, and discovers a secret she was trying to keep from the rest of the faculty -- she's participating in a church-sponsored program for runaway youths. Charlie has it out with Harry because he's stuck working in the rubber room pending an investigation. Mary Caitlin tries to no avail to help out one of the runaways, Sandy, who's got severe issues concerning her parents. Johnny begs Harry to give him another chance in Sara's class -- at least she was honest enough to say she doesn't like him. Mary Caitlin is angry to find out Matthew followed her, and confesses that she hasn't spoken to her m

Harry faces the impending consequences of Johnny's untruthful complaint against him, which the other students believe. A former friend of Matthew's, Whittington, comes to Matthew with a proposition: the chance to see the inner-workings of smart kids in a good school. Joe has no choice but to suspend Harry and put him to work in the administration office until the hearing. Suspecting Mr. Reese to be the actual culprit -- which he is -- Joe requests Johnny's father meet with him to talk about the incident. Joe and Carol discuss whether or not they should keep the baby. Charlie has a good laugh at Harry's expense now that they're both in the rubber room. Sara blasts Joe for suspending Harry, but Joe turns the conversation around and asks Sara to step up while Jack and Harry are out of commission. Jack leaves the hospital a poor man. Whittington shows Matthew how well-behaved and sharp (and smug) the suit-wearing students at Darwin Prep are. Back at Benjamin Harrison, Matthew tries to conv

A flu epidemic slims down the teacher population, including the basketball coach, so Joe puts Gus back in charge of the team. When Jack pesters Joe about wanting to be coach, Joe gets him off his back by telling him he's nominated him for teacher of the year. Roz returns to school in the wake of her sister's suicide, and turns to Mr. Turner, her sister's favorite teacher, for answers. Joe and Carol become the newest members of their condo's association, and invite the committee to their place to hold their latest meeting. But when they find out from their neighbors that the entire group hates children and don't want them in the building, Carol announces that she's pregnant, and throws them all out. An enraged Roz attacks a female classmate for saying that Mr. Turner was caught cheating. With the hearing looming, Sara asks Harry if he's having second thoughts about turning him in. Mary Caitlin is hot for Guy, but doesn't know how to tell him she likes him, so she begs Matthew to do it f