@Calliene, I can understand while such a rich list of activities can cause one conclude that they have plebeian children but hold on for a second. It made me take a breath too but then I thought about it. Hmm… if I were to list the activities in creative detail that my own daughter was busy with during HS including her final year, it wouldn’t exactly look all that different. Probably would have to sub out varsity swimming for hours of dance but the hours would still add up and maybe a few other tweaks here and there. Let’s face it, no state has more than 24 hours in any day unless Vermont does but since I used to live in New Hampshire, I can pretty comfortably say that it doesn’t and you would know about VT better than I 
Not specific to anyone’s case, but don’t forget some high schools offer quite a bit of flexibility in their programs of studies that allow for credit towards graduation to be earned in some of these out of school activities. Other schools have programs contained within the school day (performing arts HS come to mind or a school like my daughter’s HS that had an excellent drama offering all 4 years which covered a lot of the formal acting training very nicely.) Many schools offer music lessons etc. All of this can be contained within the school day or netted out of the school day if it is for credit and the school offers that kind of flexibility for out of school study. The net result is you can still have a list that looks insane when presented as a list but it actually fits together like a puzzle in the same, 24 hours minus sleeping time that it would for anyone.