3:4 is not that much of a difference. 3/7 = 43 percent probability vs 4/7 or 57 percent probabiliy comparatively.Yep, smaller is better. Run the numbers any way you wish. Kids are safer in private schools. Why do you think people of affluence that route.
Rich people send their kids to private schools because the education is better and it gets them into the ivy league colleges.
As mentioned I don't think you will find a much smaller town.