homework isn't important?

mo
I had a teacher in college who said her daycare was play based and not educational she says kids should have fun they learn a lot more than having to sit down and trace words all day (an example) she says kids in Elementary school shouldn't have homework because they don't necessarily learn anything all it does It make them hate school and they don't get to spend time with their family... she said she opted out homework for her kids up to 4th grade and they're perfectly fine now as adults.. 
any opinions?

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