That is a bold claim. In my experience school gave me exposure to subjects I would not have thought or been interested to explore on my own, and put structure around dedicated learning time.

I have kids. I send them to school. They are learning!

You might have a leg to stand on if your argument weren't so incredibly absolutist. I could certainly concede that American schools may be a less than optimal way to learn with some outmoded practices. There are certainly variances in educational quality.

But school rarely helps with learning? School almost always harms learning? I reject those claims as false on their face.