My ds6 sleeps 8pm (bedtime 7:30) to 6:45-7 for school. He is not happy to be woken. He would rather stay up till 8:30 and sleep till 8:30-9am. He still nap 1x/week. Ds3 sleeps 7:45-6:30ish (sometimes earlier wake up). Naps 2-4 most days, but can skip occasionally.

Luckily sleep is one issue we don't have in our house!