A Virginia school board says its policy prohibiting a transgender student from using the boys' restrooms is not discriminatory and was not enacted to stigmatize or embarrass the teenager.

The Gloucester County School Board defended its policy this week in court papers arguing that a lawsuit filed by 16-year-old Gavin Grimm should be dismissed. A hearing is set for July 20 in U.S. District Court in Newport News on Grimm's motion for a preliminary injunction barring enforcement of the policy.

Grimm was born female but identifies and lives as a male. He says in the lawsuit that he used the boys' restrooms at Gloucester High School without incident until the board, responding to complaints from parents, established private facilities for use by transgender students.