Generally very positive, though perhaps not for the reasons you'd imagine.

Basically everything you learn in grade school will be useless in real life. This is not because you don't learn anything: it's because you have not experienced enough by high school to have a reasonable chance of knowing what you want to specialize in, and you have to specialize for your adult life. So the fruits of that deliberate practice will be useless whether you learn stuff or not.

Instead, I found that the project-based curriculum was useful because:

1.) It shows you that there is more depth to things than simply doing what you're told and regurgitating what you've learned.

2.) It trains you to take initiative and be responsible for your own education, and later your career. There's a huge difference between learning stuff and doing stuff, and projects help bridge the gap.

Both of these skills are invaluable later on, when you do know what you want to do.