My ds12 goes to a private gifted school and has homework in Algebra, Spanish every evening. He always has a project in LA and History but gets these done in class most of the time. He also always has a couple long term projects in the works. They have bench marks to report in class but it is at least 75% you are on your own. The most recent was a 3000 word creative writing project and a 10 minute documentary movie. Each has a rubric to follow so if you budget your time you are fine. If you get behind you are stressed.

He still does not really study for test or quiz. You can tell on some of the grammar test.
The kicker is all he has to do is look over it once, even a brief glance and no problem.