Target local businesses that have the products you need. Many will ask for an official donation letter with LAUSD's Tax ID number on your school letterhead.Donation request must be sent at least two months prior to event. 1. Mail donation request with letterhead and tax ID number to. Writing a donation letter for school can be daunting, but with these free templates, you can send the right message in no time. To officially make a donation request, please fill out the form below. If you believe your non-profit organization is eligible to receive a donation, please take a moment to fill out the request form below. Here's what to say when asking for donations: Be clear, succinct, and authentic. Use "you," say "thanks," and be specific. All donation requests must be submitted electronically at least six (6) weeks prior to the fundraising event.