Past Due SITE Payments (2022-23) Although the form may make mention of donations, this form is for SITE tuition which is not a tax deductible donation. Also, please note that if the system defaults to ACH, you will be still able to use a credit card by simply clicking 'other payment methods' to the bottom right under the payment method. If making payments over $1,000 (registering multiple students and paying at once) you will need to pay with ACH or call our office at 303-220-7200 to pay with a credit card over the phone.Alternatively, you can use this form for each child separately. Donations to cover processing fees go directly to Zeffy and are not required.