You might want to contact the Wachusett School District office. I don’t know what resources they have for special needs. But, as a large school they have great academic resources if you take advantage of them. I attended the state science fair twice with one of my kids and Wachusett was well represented. One year they took the top award overall and my kid was a first place recipient in one category and now has a PhD from Harvard. Another school that excelled was the WPI Academy of Math and Sciences. Students there can complete their freshman year at WPI while completing HS.