A former student of Winslow High dies in Iraq while serving the U.S. Army. Principal Harper receives a letter from the deceased student which brings back old memories back to the days when he took care of him and pulled him away from a life in the gutter. Danny Hanson struggles with a student in his class who's been hacking into the school's computer base; finding out about the teachers' private lives and upcoming tests.

A female student files a serious sexual-harassment charge against Danny; a classroom debate over the U.S. involvement in Iraq turns violent; the tension between Harper and Guber over Marylin reaches the boiling point.

Ronnie catches a male teacher hugging a female student; Hanson worries that he may be a control freak following an incident in his Drivers' Education class; several students are caught photographing themselves nude with only words written across their bodies.

An overachieving student sues the school when she has to share presidency of the honor society with a black student in a wheelchair; Marlo begins her in-vitro process.

Views on affirmative action divide the students; the teachers hope to quell the resulting tensions by debating the subject in front of the student body.

An enraged student slaps Marla's face in front of the class, and Marla slaps her back; Hanson discovers Allison behaves like a bully at school; Carmen asks Harper to remove Jake from her class.

Henry gives bad advice to a brainiac student who wants to become an artist; Marla has a miscarriage; Rainy is thrown out of her foster home.

An investment banker, convicted of securities fraud, avoids jail time by agreeing to community service: teaching math at Winslow High. A sexy and eccentric woman smashes into Guber's car and then crashes her way into his life.

After a cheerleader is attacked, blame falls on another student's mother (Sean Young); Carmen goes head to head with a ""bad boy"" student (Milo Ventigmilia); Hansen copes with a student who says he is the son of God.

Charlie Bixby (Dennis Miller) takes an unconventional approach when volunteering at a teen hotline; Marla decides to try in vitro fertilization and asks Harper to be the donor; Carmen reveals a secret from her past.

Guber contends with a student who thinks he is Jesus and is using school funds to feed the homeless; Marla mistakenly books R.E.M. for a school fund-raiser.

A student discovers Harper and Marilyn have been secretly dating and threatens to go to the school board; Hanson and Claire try to assist a student who is having trouble with his dad.

Harper decides to call the FBI when he learns that a student has been accessing a terrorist recruitment web site from the school library; Ronnie learns that one of her students has HIV.

Ronnie witnesses an attempted rape, then receives a shock when she presses for legal action on behalf of the victim (guest star Amanda Fuller); Hanson tries to prevent a student from being expelled for drugs.

Guber discovers the high-school drum line's freshman hazing involves physical abuse; a student-produced TV documentary about Ronnie worries her; a father is sentenced to being handcuffed to his son for a week.