Where Can I Get Help For Testing My Son For Adhd In Tallahassee Fl. (we Have No Insurance & Have A Low Income)

We are very confident that my son has ADHD and has really reached the point where we think the drug would be the best option. We have worked with her teacher all last year and this year things are getting worse. We live in Tallahassee, Florida, and have no insurance and have a low income. Not qualify for Medicaid because "to do much". After paying our bills there is absolutely nothing left. Is there a place here in or near Tally offering assistance in getting my son and tested the medication? I would like this issue is resolved before he moves to an ESE class at school. He is in 1st grade and has been moved to a new class because most of the current students of 1st grade and I want to go for the third time this year. I do not know what else to do at this point. I am very frustrated and just want help. Can anyone help me with this????