4 korrents from this piece
Every claim below was made in this piece, quoted word for word and numbered in the order the piece makes them, so you can read it there rather than take our word for it. The sentence above each quote is our reading of the claim, not their wording. Each quote was checked against a stored copy of the page at build time; where the two differ, the quote is the fact.
Their wordsThat’s how educational miracles are manufactured: through artificially creating selection bias, which is the most powerful force in education.
Their wordsOnce again, the composition of the student body is always more powerful a predictor than any identifiable pedagogical, school, or teacher variable.
Their wordsAcademic talent is normally distributed throughout the population, and so some degree of failure is literally inevitable.
Their wordsThat makes perfect sense when you consider that schools control 10% or less of the variance in student academic outputs.