Glenbrook teacher faces new charges in student sexual assault case

A former Glenbrook High Schools District 225 teacher is facing nine new felony charges stemming from an investigation into allegations of criminal conduct with a student, police said Thursday.

Paul R. Castelli, 45, of the 1300 block of Carol Lane in Des Plaines, was arrested on Wednesday for seven counts of felony sexual assault and a single count of aggravated criminal sexual abuse and grooming, police said. Arlington Heights.

Castelli appeared in Cook County court Thursday, where a judge ordered him to post $210,000 cash bond.

The new charges come less than five months after Arlington Heights police first arrested Castelli on Jan. 2, when officers patrolling the Algonquin and Arlington Heights roads area found a suspicious vehicle behind an office building. vacant. Officers approached the vehicle and observed a man in the driver’s seat and a girl in the back seat who appeared to be crying and undressing, police said in January.

Police later learned that Castelli was at the time a teacher/case manager at District 225’s Glenbrook Off Campus Center, a small therapeutic day school attended by about 50 students with special needs.

Castelli was then charged with felony sexual assault and aggravated criminal sexual abuse.

According to Arlington Heights police, further investigation revealed that Castelli, while in charge of the girl’s individualized education program, began communicating with her through a mobile app. During these interactions, Castelli regularly complimented her appearance, police said.

Around September 2021, Castelli began meeting the girl outside of school and making physical advances towards her until their relationship became intimate, according to police. Over the course of several months, Castelli sexually assaulted the girl, police said.


District 225 officials placed Castelli on administrative leave following his initial arrest.

“Glenbrook High School District 225 continues to be disturbed by the January 2 arrest involving the inappropriate behavior of a former Glenbrook District 225 teacher,” the district said in a statement Thursday. “As a reminder, the incident did not occur on campus and the arrest was made by the Arlington Heights Police Department. We cannot provide additional information at this time as it is unclear. is an active police investigation. When hiring employees, the District conducts a thorough process that includes state and federal background and fingerprint checks.”

Castelli is due back in court on June 17.

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