Hi Ann,
You are not starting to early with your research! I would recommend getting in touch with Sharon Puckett of the Dorchester District 2 system. This is the public system in Summerville and Goose Creek area (Parts of Goose Creek rather). Other families I have helped who have special needs children have been assisted by her in determining which school has the best programs for their child. Her e-mail is
spuckett@dorchester2.k12.sc.us
She should be able to start pointing you in the right direction.
Let us know as other questions arise!
Sincerely,
Foster Smith