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Collective efficacy and baking a cake  --- We really liked this piece by blogger John Thompson on the important interconnected components for school turning arounds. We were particularly fascinated by one of his quotes from Tony Bryk and friends who "likened their 'essential supports' (for school turnaround) to a recipe for baking a cake: Without the right ingredients, the whole enterprise just falls flat. 'A material weakness in any one ingredient means that a school is very unlikely to improve.'"