Wow! Thank you all so much for your thorough and instructive replies. I hadn't realized there were so many tests to assess a child's development! I will look into all those mentioned and at least get one done for peace of mind.
My son happens to be tall for his age (46.5") so he'd fit right in with 1st graders if that's the road we decide to take. I really wouldn't want to change school because it's important to me that he learns French (my mother tongue) and this is a French immersion school (4 out of 5 days in French only).
Since he also writes relatively well (in English and block letters) I can't see him greatly challenged in 1st grade either, except for his unexpected crying outbursts which other kids his age already look at him strangely for.
Thank you again for the warm welcome...
Vic
ps: I found this website through a Google search.
