Hi Kimmy, I wonder what part of the planet you are on? I can only tell you about what happens here.
I live in Wales, UK and I have six kids - two are autistic and both are in mainstream classes but also receive good support, so they get the best of both. Both are boys, 9 and 12. The 9yo is ahead of his group for maths and english but lacks a lot of the basic life and social skills. The 12yo is showing promise in computing. Neither of them have been told yet that they are autistic, but they will be. See, I don't know either when to tell them.
What I tell them is that they are different, and special, and most of all loved.
I check in most days, if you have any questions or want to 'talk' anytime it's cool with me.
Tom
Be proud of who you are