Have you ever thought about how polarized some debates in education are?Think about it.Whole language versus phonics. Direct versus indirect instruction.Public versus private schools.My guest today, Professor Yong Zhao, says that these polarized debates result, in part, from research studies that only look at effects – or side effects – of educational interventions. Rarely do studies acknowledge what works and what doesn’t.Yong Zhao, a Foundation Distinguished Professor in the School of Education at the University of Kansas, argues that educational research should learn from medical science.