A Queens teacher who was arrested and fired for taking a 16-year-old student to a hot-sheets motel for a videotaped romp also violated two other boys — inside her school, says a shocking investigative report obtained by The Post.

Tara Driscoll, 35, a former English teacher at Law, Government and Community Service HS in Cambria Heights, pleaded guilty last June to having sex with the minor at the Capri Lynbrook Motor Inn, a 15-minute drive from the school.

But earlier, she brazenly had sex with two other students at the school, where her serial shenanigans were uncovered by girlfriends of the teacher’s pets, the report by schools investigator Richard Condon charges.

The report alleges that after sending flirtatious text messages to one boy, Driscoll called him to her office in October 2010. Upon entering, they began kissing.

She locked the door and put a chair against the knob to secure it. They lay on the floor behind her desk, where she performed oral sex before they had intercourse, the boy told investigators.

Another boy who visited her school office in December 2010 told probers she locked the door and performed oral sex on him.

In March 2011, a girlfriend of a third boy discovered his phone had sexually explicit texts from Driscoll.

“I will f–k you hard like a teacher,” one allegedly read.

She and other girls angrily confronted the teacher.

“I did not mean to, I am lonely, and f–ked up . . . You can beat me up right now,” Driscoll bawled, one girl told investigators. She cried she “needed someone to love,” and “My mom is dying” of cancer.