There is only one reason to use this special payment option:

If you have a credit (that you opted to take in lieu of a refund when a class you were registered for was cancelled) and you would like to add to the credit in order to take a higher priced class, you can do that here.

However, please call us first at 415.609.2468 in order to confirm that we have your credit on file, and what the additional amount should be. Once that is confirmed, you can use this option to add to your credit.