In Oregon, culinary arts students are able to use alcohol in their cooking. However, a waiver helps the school district and you as the teacher safe legally. Your state may be the same, in which case this template to use for parents and school district will be of great help!
The file is a document format and easy to edit. I also suggest using a school district letterhead. If you are not in Oregon, you will want to add your state's law using alcohol in a high school culinary class setting.