My impression as a former SAT instructor is a lot of students don’t spend that much time prepping. And if they have no good reading/math background it can take

My impression as a former SAT instructor is a lot of students don’t spend that much time prepping. And if they have no good reading/math background it can take some effort to master things. That said, typically saw increases well above that in my classes. Even with zero instruction I’d expect a self studying student to improve more than that from familiarization. It did say upper class people improve more.