This. I found out if I showed up everyday in high school and focused in class I could get a B or A in every class without doing any work at home. I still did some homework but it was in school. My time outside of school was mine. It was great.

I had a very rude wake up call when I got to college.

I know high schoolers now and I encourage them to actually do the work. It's not that x,y,z topic may be important someday... It's the skill of doing the work, even when you don't want to, that will be important in life.