For the PP that asked how schooled children can do extra stuff and have down time here's our upcoming week for comparison (but my DS is only 8 so not a straight comparison).
Monday is an inset day we have tickets booked for a wildlife park. It's about an hour away so the the way he'll listen to an audio book, on the way back we'll talk about what we've seen and learnt. While there we'll cover the ethics of zoos, climate change, habitat destruction and various other related topics. He will read every sign, info sheet etc because that's his nature. In the evening he'll chill with TV or computer (probably looking up info about some of the animals he found interesting). He'll read a novel in bed for about 45 mis.
Tuesday school , English, Maths, Science, play rehearsal after school hockey. At home the school set spellings for the week. Free time. Will read in bed for 45 mins
Wednesday school English, maths, PE topic work. Lunch time chess/ puzzle clubs. After-school forest school type club then swimming lesson rest of the time will free time to do whatever he wants. Will read in bed for 30 mins
Thursday school - English, maths art After-school netball. Cubs. Will read in bed for 30 mins gap between school and cubs is free time.
They run a daily mile at school everyday and have a twice weekly library slot, twice weekly slots helping on the school farm/garden and contact several times a week with their "buddies" in the infant's school. This is a mainstream state school.
Friday school fun Friday ,PE, music, ITC and either French, forest school or cookery depending rota. School set home work and maths/ spelling computer programs as used in school. Free time. He will read in bed for at least 45 mins.
Saturday and Sunday a mix of board games, something like a science kit, building a robot kit, coding game or model making/ painting etc trip out to a museum, NT property or similar with loads of chill time.
We talk about what he has learnt on the 20 minute walk home every day and will find quick, easy fun ways to re-enforce and expand that knowledge or go over it if he isn't sure. So if they are doing division in maths I'll ask him to show me how to do it (so I can check he understands, ensure I'm asking him to use the same method he's been taught). I'll then ask a few sum throughout the week based on what ever he is doing at the time so currently using rugby scores to practice times tables - how many tries, conversions etc will Wales need to catch France.