KANSAS CITY (AP) — A 54-year-old former teacher and swim coach who worked in the Kansas City area has been sentenced to federal prison for sexually assaulting and exploiting children in crimes that spanned decades.

James Green Jr. was sentenced Tuesday to concurrent terms of 30 and 10 years for production of child pornography and possession of child pornography.

Green faces other sex crime charges involving minors in Jackson County.

Federal prosecutors say Green used hidden cameras to videotape sex he had with children at his home, and to tape high school boys undressing in school locker rooms. The filming occurred for about 20 years.

Green taught and coached at Oak Park High School, in several middle schools in the North Kansas City School District and at Blue Springs South High School. He also coached at Hallbrook Country Club in Leawood, Kansas.