Out-of-Arizona-State Donors. Dear family and friends,.The School Tax Credit Donation Portal consists of a color coded map of every school district in Maricopa County. Writing a donation letter for school can be daunting, but with these free templates, you can send the right message in no time. To donate, complete the form in the donation brochure or donate online. This tax credit is claimed on Form 323. Use this template to create a donation request letter for your chapter. Presenter. Contact. Resources. An individual may claim a nonrefundable tax credit for making contributions or paying fees directly to a public school in this state. 1. Enter your school's letterhead and the current date. A: Donors can specify where they specifically want their dollars to go in the comment box.