So? With one on one to one on three tuition you can get the average child to the 95th percentile for their age group. That’s the Bloom Two Sigma effect[1]. Tutoring is extremely effective when it comes to teaching but it’s not cost effective. With classes finely graded enough by ability and prior knowledge you can get reasonably close to that with much larger numbers of students, or you can just call it Mastery learning[2]. That’s possible without picking winners. It’s not possible in public schools for institutional and historical reasons but we’re talking about education, not public schools.
