John Gisler, 41, was charged July 6 in Tulsa County District Court with lewd molestation, forcible sodomy and second-degree rape involving a teenager he mentored through Big Brothers Big Sisters of Oklahoma.

Prosecutors also charged Gisler with possessing numerous images of child pornography on a computer at his home in the 300 block of South 44th West Avenue.

In June, a 17-year-old boy told police that Gisler had been molesting him since he was 14.

Gisler has been a science teacher at Whitney Middle School since August 2005.

He previously taught at Clyde Boyd Middle School and Central Junior High in Sand Springs and at Sapulpa Middle School.

He also had been a special education paraprofessional, working with middle school students in Jenks Public Schools and with high school students at Edison Preparatory School in Tulsa.

Tulsa Public Schools Superintendent Keith Ballard had recommended July 20 that the school board fire Gisler.

The teacher did not attend Monday’s school board meeting, at which he was to have had a due-process hearing.