A Prince William County public high school teacher has been charged with sexually assaulting a student, police said yesterday.

Jeffrey Duane Wilson, 30, a business and marketing teacher at Osbourn Park Senior High School in Manassas, was charged with taking indecent liberties with a child for allegedly touching a 15-year-old female student while they were alone in his classroom the morning of Oct. 27.

School officials said Wilson, an Osbourn Park graduate, has been employed by the Prince William school system for seven years. Six of those years were spent teaching at Osbourn Park, where he serves as an assistant coach for the varsity football and baseball teams.

Wilson, of the 9800 block of Arrowood Drive in Manassas, has been placed on administrative leave and barred from school grounds pending the outcome of investigations by police and school officials.

"People are angered and saddened by this," said schools spokesman Phil Kavits, noting that officials are taking steps to ensure the safety and well-being of students. He said a letter has been sent to Osbourn Park parents urging them to talk to their children and report any information or concerns.

Police said yesterday that the victim was not one of Wilson's students, but they could not say whether she had ever taken one of his classes. The victim told a school guidance counselor, who notified the school resource officer, police said.

"During the course of the investigation, [Wilson] went into some detail about his inappropriate action toward the student," Prince William Commonwealth's Attorney Paul B. Ebert said.

Wilson is being held without bond at the Prince William jail. A court date has been set for Dec. 8. The felony is punishable by up to five years in prison.