I put E instead of B. I interpreted "success" for the program as relative improvement in child's grades between those of parents in the program vs. outside the program. So even if parents were educators, as long as the program improved their teaching ability and their kids' grades, it would still be a success.

B obviously makes sense if success for the program is "how much better the parent becomes at teaching." But that only feels like an intermediate goal or mechanism to an ultimate outcome (i.e. better grades), not the end goal within itself.

Is this where the language of "Some" in E and "Most" in B swings the balance? So E really reads "at least one kid did exceptionally well outside the program" vs. "at least half the parents were educators?"

The review video did not go into detail, so I want make sure I'm understanding this correctly.