After doing a lot of leg work on my kids I did find a few things. Aparently the best schools for Indigos are called "Sudbury" schools. If you dont have on near by your next best thing would be "Montessouri".
My Indigo went thru 3 Pr-K schools. Charter is not a good thing. They need be pushed almost with acedemics. The are very advanced academically. The more sitting they have to do, the more bord they will become, and then it off!
The website http://indigochild.com/ (official site for the Indigo Children books by Lee Carroll and Jan Tober) has many suggestions on alternative schooling of Indigos. The also have a few schools mentioned by name which were recommended by other parents of Indigos and checked out before being posted on the site.