It depends really on how good the school are in your area, I know where I grew up it was a necessity to send your kid to private school if you wanted them to get anywhere in life. In the paper each year they would have the list of Valedictorians from the local school and they were almost all going to state school and community colleges, and those are the cream of the crop public school kids, many of the rest weren't going to any college at all. Meanwhile every single person who graduated my year from our private school went to college (~150 people). Of those probably 50 were accepted to top 25 schools (although maybe 30 went and 20 got free rides at other schools). Almost all the rest still went to very good state school and such, very few went to community college (like 5 of the 150). Just looking at the SAT scores would show you that going to the private school would give you 250 more points (out of 1600 back in the day). Again, the valedictorians from the local high schools were getting ~1100-1300 SATs, and I got a 1530 and wasn't even in the top third of my class GPA wise (SAT-wise we had at least 15/150 or 10% get over 1500, 3 1590s, no 1600s, but several people easily have done so if they had retaken. The all girls private school had 2 1600s in a graduating class of 100 my year)