In Colorado, all school employees are treated the same, even school bus drivers and janitors.
Your church must have an actual preschool conducted outside of church service hours and probably collect a fee. Below is Florida law for churches normal service hours.
"(5) It is the further legislative intent that the freedom of religion of all citizens shall be inviolate. Nothing in ss. 402.301-402.319 shall give any governmental agency jurisdiction or authority to regulate, supervise, or in any way be involved in any Sunday School, Sabbath School, or religious services or any nursery service or other program conducted during religious or church services primarily for the convenience of those attending such services. "
The reason I looked at this was because I would hate to see any state interfering in regular church functions. The government does not have that right.