Philly public school parent here. If your child is safe and the classrooms are reasonably free of distraction, I'm not sure the choice of elementary school matters very much. Kids in good private schools have smaller classrooms and generally nicer facilities, so that's what you're paying for. But kids with supportive and motivated parents are likely going to do fine anywhere (with the above caveats about safety and distraction).

Edited to add that Bache-Martin absolutely qualifies as a perfectly fine place to send your kid.