Lawyers for a New Hampshire prep school graduate convicted of sexually assaulting a 15-year-old classmate are offering explanations for why he violated curfew.

Owen Labrie's lawyers say he missed his curfew to attend educational meetings, because of a bus-scheduling problem and for approved meetings with his attorneys.

The 20-year-old Labrie has been living with his mother in Tunbridge, Vermont, as he appeals his one-year jail sentence. He's supposed to be home between 5 p.m. and 8 a.m. daily, but prosecutors say he's violated curfew at least eight times and his bail should be revoked.

Labrie's lawyer said the spirit and purpose of the bail order has been followed. A hearing is scheduled for Friday.

Labrie was arrested after graduating from St. Paul's School in 2014, an elite prep school in Concord.