Is it legal for me, a freshman in highschool, to baby sit for my math teacher?

It is likely not "illegal."  It may or may not be a good idea from a professional standpoint, but there likely is not a criminal aspect to babysitting for a teacher. This is not intended to be legal advice, and is general in its nature. No attorney-client relationship exists or is formed by this information. Furthermore, this does not represent the views or opinions of LexisNexis or its affiliated companies.