Lauren continues her realtionship with Daniel. Marilyn finds out that Jeremy's mother is locking her son in the basement for punishment. Steven can't date a student's mother. Kevin punches an opponent ina debate.

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.

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

One of Senate's most promising students and his brother become entangled in criminal acts with fatal results; Hanson draws criticism for sending a letter to a girl's parents because she is overweight.

Temporary synopsis from TV Guide:

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

A jailed Harper faces a manslaughter charge in the death of a student's father; a rebellious teen receives unsolicited help from Hanson, who uncovers the youth's dark secret.

Guber's speech team star has an issue, Russell decides on a college, while mixed signals rattle Colin as his affair comes to a close.

Hanson asks Claire to marry him; a student uses rap music to critique Shakespeare; a producer pushes Aisha to sign a record deal; Lifehouse performs at Doyle's Bar.

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.

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 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.