Sounds like a no-brainer: Find out what pedagogies to pass on to subsequent generations of teachers by comparing theories and practices used in classrooms and determining those which produce the most student success.

But, no, as Sandra Stotsky writes, teacher educators generally discourage a scientific, empirical approach to deciding which pedagogies to promote. If — trying to counter the massive damage being done to students — you disagree, you get accused of “paradigm blindness.”