Now I’m curious what you think did get him an Ivy acceptance.
Tippy tops don’t generally go for 3 scores on APs, unless he did not report those and had other strong AP test results that he did share. What were his SAT or ACT breakdowns?
For our kids applying to colleges, it’s not the school averages (SAT/ACT, SAT2s or AP) that matter to their own chances or reflect their individual learning. We’ve got 2 issues here- his own college performance so far/how prepared, and then some outside measure of the hs, itself.
A 24 ACT Composite average for the whole class isn’t “bad,” per se. We’d need more info. Eg, some hs or districts require every student to take the SAT or ACT, that can bring down averages. What would tell more is performance among the top x% of seniors. Their gpa to their various test scores.
A 90% matric rate to 2 or 4 year colleges is good. But what are the 2 year colleges? In some areas, they’re more vo-tech. You described the local cc as heavy on remedial work. Plus, how ofen does a high school report who completed college degrees in x years? That’s usually a figure colleges report. They collect their own data. A hs would need to track down every hs grad over the years.