I’d be really really surprised if a Junior/Senior taking a strong course load had 3 hours of homework at any school. My kid’s pretty efficient and isn’t texting while doing homework. It takes far more than 3 hours ( not to mention weekends studying for tests and writing papers). Kiddo always goes to sleep pretty early (isn’t one to stay up til dawn) but is one to go to the library and utilize free blocks.
I wouldn’t go so far as to say they aren’t telling the truth but maybe the match of kids isn’t there.
Freshman it might be 3 hours. But I think that’s an underestimate. Really depends on the kid. If they are taking advanced courses and digging deep, I’d say 3-4. For upper grades it’s more 4-5. And for kids who are taking lots of AP’s can be 4-5 plus weekends. Will vary a lot by kid. Are you talking about kids who are doing well or kids who are doing great? And for most kids, Freshman year is a getting adjusted time so 3 might be correct. After they get their grades they might want to dig deeper or continue as is.