Episode 45 of "Boston public"
s03e01 Chapter Forty-Five

A new year arrives at Winslow High and new tensions immediately arise. Brooke is caught in the middle when a group of students plan a walkout because the administration has been unable to handle crucial issues such as toxic mold in the bathrooms and overcrowded classrooms. Harper and Guber try to talk to the students, but the students see it as another weak attempt to appease them. And when the students stage the walkout, a riot quickly ensues. Meanwhile, Marla finds a newborn baby in the toilet and discovers that her student Amy had just given birth and left the baby in the bathroom. Amy insists that she wanted her baby and was coming back to get her. Marla rationalizes that Amy was in shock and was coming back immediately. To protect Amy, Marla tells the police that her baby was on the floor. This prompts Danny, who is highly suspicious, to tell Harper and Guber, who are then forced to notify the authorities that evening. Senate runs into his student, Trina, while taking a drive in Ronnie's car and innocently gives her a ride. A cop pulls him over, recognizes Trina as a prostitute and arrests Senate for soliciting a prostitute. Ronnie bails Senate out, and Senate tries to talk Trina out of being a prostitute. Her stepfather, Carl, appears supportive and even encourages Trina to go to classes again. But Senate soon discovers that Carl has been pimping Trina and Harry has a panic attack. Ronnie tries to get Senate to deal with his post-traumatic stress disorder, but his refusal to do so strains their newfound romance. Meanwhile, two new, young teachers, Zach Fischer and Colin Flynn, start at Winslow High. Fischer immediately causes problems with Harper when he fuels the fire of the student protests.