That others didn't retain it as well as I is less an indication of the school's teaching than of my retention, methinks; that's why I don't compare myself to students in my high school, but rather with the higher-tier students at MIT from other schools, who are hopefully more similar to me. And if they didn't teach it well, then at least I know they taught it better than in the European schools of which I chatted with foreign students, by comparing pedagogical style, instruction quality, and so on for fun one day.