TRAVERSE CITY, MI -- A former Traverse City Area Public Schools student who was sexually assaulted by a teacher has filed a Title IX lawsuit against the district.

The federal lawsuit claims the teenage boy was harassed, ostracized and excluded by the district's "retaliatory treatment," which ultimately led him to drop out of high school.

The former Traverse City West Senior High School student was 15 years old when Lisa Gaye Placek, who was later convicted, sent him lewd text messages and performed oral sex on him in her car during the 2011-2012 school year.

Placek, 48, had been a volleyball coach for the district since 1997 and a teacher since 1999. She resigned in January 2012, according to the Associated Press.

She pleaded guilty to assault with intent to commit sexual penetration and was sentenced in March 2012 to 23 months to 10 years in prison. Michigan Department of Corrections records show she was paroled to Grand Traverse County in January 2014.

The lawsuit filed Monday, Feb. 9, in U.S. District Court in Grand Rapids claims a violation of Title IX, the federal legislation that prohibits gender discrimination on the basis of sex in education programs and activities. The lawsuit also claims the student's rights were violated under the Equal Protection Clause of the 14th amendment and Michigan's Elliot-Larsen Civil Rights Act, which prohibits discrimination based on a variety of factors.

The student, who is not being identified by MLive and The Grand Rapids Press because he is a sexual assault victim, is represented by Traverse City attorney Grant Parsons.

The victim is seeking a judgement in excess of $75,000.

Placek sent the student text messages both during and outside of school beginning in his ninth grade year, and the communication became a nearly daily occurrence when he was in tenth grade, according to the lawsuit. She began "sexting" the student in late 2011, which allegedly included two images of her bare breasts. Around that time, she performed oral sex on him in her car in Leelanau County.

The lawsuit claims the student, who is now 18, was ostracized at school and in the community after the allegations against Placek came to light in January 2012. District officials are accused of being deliberately indifferent to bullying and adding to the harassment by reporting false accusations to police in an attempt to undermine the student's credibility.

Once the allegations against Placek became known, "students harassed him; parents gossiped about him; coaches excluded him; teachers refused to share their classrooms with him; administration changed his classes and supervision, expelled him for a period of time; officials falsely accused him of misconduct and made unsubstantiated reports against him to police to undermine his credibility during the sexual assault investigation."

The lawsuit alleges the district failed or refused to remedy online bullying after the student went to school officials. The victim was physically threatened by other students. His car was keyed.

The student claims he was humiliated by a teacher who took his phone and instructed him to move his desk to face other students during class. He was shunned by baseball and football coaches who excluded him from road trips and stopped a routine of picking him up for morning workouts.

The district is accused of contacting the sheriff's department with false allegations that the teen chewed tobacco and instructed other students how to view porn. Authorities did not pursue criminal charges against him.

The student was suspended on two occasions, including once for an accusation that the lawsuit says school officials later retracted. Around that time, he was accused by officials of being "untrustworthy" and having "sexual issues." The lawsuit says a school official created a list of alleged wrongdoings by the student.

Placek pleaded guilty three months after charges were brought against her. The school community thought the student was at fault, making him an "outcast," according to the lawsuit.

School officials in January 2012 were informed of allegations of prior sexual activity involving Placek and another student, the lawsuit claims.

Prior to the assault, the teen was an "exceptional athlete and capable student." The lawsuit says the district forced him to change classes and did not allow him in classes attended by Placek's children. He changed schools and moved, then eventually dropped out without finishing high school.

The student suffered from hives, sleep loss, anxiety, depression and anger.

"As a direct and proximate result of the sexual harassment and retaliation by Defendant, Plaintiff suffered severe embarrassment, humiliation, retaliation and harassment and anguish, loss of reputation and social standing, he lost his athletic participation and with it, his opportunity for a college scholarship," the lawsuit says.

Angie Jackson covers public safety and breaking news for MLive/The Grand Rapids Press. Email her at ajackso3@mlive.com, and follow her on Twitter.