Super hard to interpret accross different schools. Especially for DOs because there is so much of a wide variety in the grading system schools use. Some use ABCDE, some P/HP/H. Some a percent grade. Some P/F. It's all over the place. MD schools traditionally are P/HP/H. And both DO and MD schools have some schools where getting HP/H is very difficult, and others where everyone gets HP/H. So it makes looking at grades very difficult, and if schools provide quartile data, that at least gives you some idea where the student actually falls within their peer group at their school. Some schools also don't provide you with that.