"All they need to do is get good grades"- meh. My kids spend 30 min or less on chores every day and they still have tons of time for studying and playing. I think chores are just part of being in a family. There was a Harvard study about children who do chores were more successful in life. If you aren't raising kids who do chores and know how to do them, you're raising poor future spouses.
https://www.mother.ly/child/child-learn-play/chores-for-kids-can-be-the-key-to-success/
My 10 year old does dishes and empties the dishwasher. She also sets the table.
My 7 year old folds clothes and socks and puts them in everyone's drawers. (I do hang most of our shirts/pants/dresses though, so he's really just folding pajamas, leggings, socks, underwear, athletic clothes)
They both have to keep their bedrooms neat and tidy. We spend 5 min at night on this if it's not already tidy.