Hi Cecilia-
Hang in there. You had to blaze the path for your son, and it took a lot of time and energy. I don't blame you for having a moment -- you JUST finished getting your son more appropriate challenge. The upside is that now the school has gotten to know you and your family.
Every parent I know is one of "those parents" -- trying to find the best fit for their child so they are happy, challenged and stretched at school. We are all looking for the same thing -- just like Goldilocks. (not too hard, not too easy, just about right).