I would go at it from a different angle - it is truly none of thei business if your child or any other child has special needs - however the fact that you have experience and a program set up to support varied needs IS a selling feature so I would focus on that when touring as my guess is the special things you have in place for he will benefit ALL so focus on that.
For example while touring my playroom I would say experience working with various children has shown me that labelling toy shelfs with photo such as this helps children to self regulate, reduces stress etc which is specially helpful with a chip with Autism or ADHD. The fact I may or may not HAVE a child like that currently is irrelevant
If they choose you and it later comes up you did disclose that the program was equipped to support a child with autism - it just happens to be your own![]()