The first day back at school has barely begun when the police show up looking for a murder suspect. A botched robbery has gone down a few blocks away and the panicked assailant, wearing a Winslow High letterman's jacket, shot and killed a man before heading towards school grounds.

The police think the suspect is a student who is hiding on campus and demand to begin the search at once. Meanwhile, oblivious to the tense situation, Lisa and Buttle decide to have sex in the deserted boiler room. Unfortunately, Riley and an officer stumble upon the couple during the investigation and catch them in the act. Riley agrees to keep quiet about the affair for now, but urges Buttle to break it off before he loses his job…or worse.

As the hunt continues, it becomes a code red condition, locking both teachers and students in their classrooms. Eventually, Lauren realizes that a pupil in her class might be the suspect but before she can take action, the desperate student whips out his gun and takes La

As Senate approaches the school grounds, he saves a student from being attacked by gang members. After numerous attempts, Harry finally manages to get the boy to reveal that he is a member of the Crips and is attempting to leave the group because he killed a rival gang member.

However, Senate is unable to help because he gave his word that he wouldn't discuss the situation with the authorities. Prevented from taking action, he reluctantly hides the truth from Lauren, his co-workers and the police.

Meanwhile, Harper grows even more suspicious about Lisa and Buttle's deepening friendship, so Guber takes the reins and alerts Lisa's parents about their daughter's rumored affair. Thoroughly panicked, Milton tries to break it off, but Lisa pushes him to have sex one last time and her father catches them in the act.

Buttle is immediately fired and the news rocks the halls of Winslow High. But when Riley attempts to soften the blow for Milton, Guber fires him as well for withholding informatio

Lauren finds Harry hasn't told his friend about her. Six teachers resign and Marla must teach a class she doesn't know how to. Scott wins a contest to be a guest conductor and asks Marilyn out when she is too nice to him. Steven and Harry look for a missing teacher.

Security tapes of the girls' shower room are missing... with footage of Lauren on them. Marla sends her entire class to the principal's office. Anthony's hit list is found. Lauren and Harry break up.

A student's mother complains about bus fumes to Steven. The tape of Lauren showering ends up on Sheryl Holt's webpage. Harry gets in trouble for knowing Tyronn was a murderer. Scott becomes Lisa Grier's co-teacher for her Shakespearre class.

While heading to work, Lauren's car breaks downs. She gets so frustrated with it that she starts jumping up and down on it and smashing the windows with a baseball bat. Suddenly, an old student of hers appears named Daniel Evans who thanks her for changing his life. He shows her a history text book he has written and she is very impressed. He asks her out for a drink, and she immediately says yes. After, they head to her place and have a night of passion. The next day she tells Marilyn, who finds it a little immoral. Lauren cannot get past how great the sex was. Lauren admits she finds it a total turn on when Daniel calls her Ms. Davis.

Marilyn is dealing with a boy named Jeremy who throws up after an anxiety attack related to his mom not being able to accept his mark of a B+. He goes to the nurse, where Marilyn notices a huge bruise on him. He says he got it playing basketball. When Jeremy's mom shows up, she says he must of got it on his scooter. Marilyn suspects abuse.

Steven's remarks prevent Scott from getting a job as a headmaster. Lauren finds out Daniel is stalking her. Marla worries when a convicted sex offender asks a younger girl to the senior prom. Marilyn suspects Jeremy has done something to his mother.

Harper's headstrong daughter Brooke enrolls at Winslow High after she is kicked out of private school. Meanwhile, when Ronnie is disappointed that her class is not learning Shakespeare, her ex-suitor Matthew Baskin, who continues to pursue her, offers a unique way to reach her and her students.

A statutory-rape case entangles Ronnie with the enraged parents of the 15-year-old victim; an illicit-drug situation embroils Harper with his unsettled daughter

Harper reunites with his ex-wife at a holiday benefit; students ask Louisa, Marilyn and Marla to perform at the pageant; Senate stays mum about a student's tragic secret so that the boy's family can enjoy Christmas.

A revelation concerning Jeremy fractures the relationship between his mother and Guber; a plea from a death-row inmate troubles Harper; a student's ADD affliction disquiets Ronnie.

Tensions escalate among Meredith, Jeremy and Guber, who seek family counseling; controversy swirls around a student's class-project photo and a speech by Lipschultz.

Guber accepts Lauren's offer of a platonic date; Ronnie confronts a student about her pregnancy; Hanson helps his students cope with the aftermath of the terrorist attacks.

Harper gets steamed when he finds out his daughter is dating a 27-year-old man; Guber and Senate's students get ready to rumble in a debate.

A student's illness rattles Senate, who's haunted by feelings of futility; a teen's eating disorder upsets Lauren, who's also unnerved by an web site advocating anorexia.

The students and teachers at Winslow High School deal with the tragedy of a car accident caused by a drunken driver; Senate tries to convince a man to keep his son in school; Marla and Meredith clash over teaching methods.

Controversy strikes Hanson's classroom over a reviled racial epithet; Ronnie draws ire for a class assignment to experience life as a homeless person.

Ronnie tries to persuade an 18-year-old student not to pose for a racy magazine; Guber and Meredith disagree about a classroom incident; Lauren and Marylin are questioned about their teaching methods.

Ronnie catches a student performing a crime; two female students tell Marylin about their sexual conversations online with an older man.

Former student Dana Poole returns to Winslow, hoping to spend time with Senate for a class project; Lipschultz is confronted by a man who claims to be his son.

As the prom approaches, female students outrage the faculty when they auction themselves as dates, while Harper deals with angry students who oppose his allowing a gay student to compete for the queen's crown.

Young teachers join the faculty; students plan a walkout because of the administration's apparent lack of concern for student issues.

Harsh echoes resound from the student riot; the Danny-Marla confrontations lead to racist allegations against her; a drug deal entraps one of Guber's prized pupils.

Misconduct charges target Guber, who's up against a new superintendent; race issues fester between Marla and Danny; reckless student driving sparks reproach.

A sex scandal among teens rocks Winslow and prompts a mock trial of the accused instigator, a clean-cut senior who's defended, prosecuted and judged by his peers.

Senate's erratic behavior rattles Ronnie and prompts a telling showdown with Harper; pupil misconduct provokes a new teacher, whose youth belies grit.

Harper has concerns about Brooke's infatuation with the star basketball player; Flynn is attracted to a student's mother; a boy enters an online auction to buy a night with a beautiful girl.

Marla berates Aisha and the other performers in the school musical; the incumbent mayor grills Harper about low test scores; students land a juicy story about a teacher for their news broadcast.