We are facing the same questions this year. Local people know what the school is from the name and they always have a comment. Like, why would you put that pressure on a 7 year old? Doesn't the homework take 2 hours? Won't he get burned out? I'm able to respond by telling them how much he loves school this year finally. Sometimes we can move on to a different topic, but sometimes they press. If they do, I will say, "Well, it's not for everyone, but DS does better in school when the teachers give him lots of new material." Nan