You can, but you probably shouldn't. First, the rules: The IRS absolutely forbids 501c3 tax-exempt organizations from endorsing or supporting political candidates in any way. You can do a small amount of lobbying for legislation, including ballot initiatives. So you likely can donate to the levy committee (state rules notwithstanding) as long as the donation isn't a substantial part of your overall budget. However, we've seen school levy issues derail many groups. These issues aren't cut and dried, and even people who support the school can disagree. We recommend instead of making a donation from the PTO, you ask members to donate individually if they would like.