From reading FB mom groups it seems like the vibe is that if you as a parent are attentive and what not kids can do really well in SPS (even not in a magnet school). A lot of "dont let the scores fool you" because of how diverse Stamford is a lot of non english speakers taking the same tests bring down the scores

I would also suggest joining some of those Stamford mom facebook groups they have lots of opinions on things and suggestions for things to do with kids in the local surrounding areas!