Public schools have students on average for 6.5 hours a day, 180 days a year.  That is less than 1/3 of the day; yet once again the trolls hold teachers and institutions responsible for the outcome.  No one wants to examine the influence of screen time replacing actual reading.  No one wants to examine the influence of hunger.

Usually, with more detailed examination, the same people who scream about the concept of Common Core are the same geniuses who want public money poured into their private, parochial pet project.  That way the "education consultants", retired military who received "public administration" degrees on the taxpayer dime and those who may have been gently helped out of their teaching professions can still collect a salary on house-of-cards voucher fed experiments.  Hey that way their church/slash voucher school can get a new wing.