Well, it is nice to hear from you! Very flattering. I blogged your question at pottersblog. (that is how you found me, and the link is below) I strongly suspect you are one of my friends trying to squeeze a recipe out of me, and I have written that my recipes are secret. They really are secret.
I will help you if you describe your school and teacher and your ceramics class and what you do to mix glazes in the classroom. Then we can take it from there.