In terms of schools, there is no substitute for you as a parent visiting the local schools and board of education offices to gain an in-depth perspective (websearches only go so far). Principals are supposed to act as educational leaders in their communities and, as a former teacher, I see that the faculty tends to reflect the values of their leader.
Best of luck with your move!
Prudential Connecticut Realty
9R Hartford Avenue
Granby, CT 06035
Realtors aren't allowed to recommend one town over another as it's called "steering" and is illegal, but we can point you in the direction of where to do your research on communities.
Town of Avon Website; http://www.town.avon.ct.us/public_documents/index
Town of Simsbury Website; http://www.town.simsbury.ct.us/Public_Documents/index
Town of Farmington Website; http://www.farmington-ct.org/
Regarding the demographics of each town, try this link; http://www.city-data.com
I see that you are from MA. I am a licensed realtor in both CT and MA so if you need any further assistance in MA, CT, or both please contact me at firstname.lastname@example.org