Register at the Student Store, during lunchtime only. Cost is $87 per exam. For students on free/reduced lunch, cost is $5 per exam. Bring completed AP Exam Registration Form signed by the student and a parent. Please make checks payable to Chatsworth High School. No refunds are available once payment is received. Late Exam Registration (March 7-11) is available, however there is a $20 per exam late fee. No exceptions! Please plan ahead!!