Science Class

go for astrology
too many people still believe that pomegranate, and it's easy to prove absolutely wrong because it makes predictions unlike religion

But astrology is fun, religion is work

And astrology doesn't give you the ultimatum Believe me or I will hurt you. Which nearly every relegion does. (Our religion has the true savior and his principles! Believe me or rot in hell/eternal damnation!@@@)

Also most kids are athiests(Or believe they are) and would probably either

A) Agree
B) Laugh about it.

Teacher really can't do more than tell you to stop considering (at least in my rulebook) doesn't really ostrisize the religion.