Why didn't we think of that?

Failing Houston schools are trying something new, or rather, something old-fashioned. The teacher stands in front of the class and teaches lessons. After an hour or so there's a short quiz, which lets the teacher split the class roughly in half. The half who are struggling the hardest get more hands-on teaching, while the half who are picking it up faster have a chance to work more on their own. Kids who disrupt class get a time out in a separate room, where they continue to be taught by a ZOOM link under adult supervision.