<<Disclaimer: Verify this information before applying it to your situation.>> A popular school fundraiser here in the Midwest U.S. (and possibly other parts of the country) is "Market Day". They have a website http://www.marketday.com where you can find ingredient lists for all their products. The lists contain some of the usual ambiguities, but the website also gives an e-mail address you can contact to get more detailed info. I used it to find out about their American cheese and was told it is GF.