Everybody talks about the teachers and the school officials when discussing education. Let me ask:

Did your kid have a good breakfast?

Did he have a good night's sleep?

Did he do his homework last night?

or did he watch violent media and is now overexcited and babbling?

Does he speak English?

If he gets a good grade, will another kid punch him in the stomach?
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You want to improve learning? Start at the beginning.