Date Change and Cancellation Policy: In the event a participant would like to change the date of their upcoming session, Cornerstone will allow a one-time change. For second-time changes, cancellation fees will apply. A cancellation fee of 50% of registration costs will be applied for a cancellation received more than 10 days before the school. No refund will be issued for cancellations received less than 10 days before the first day of school.