Cooking class was mandatory in my school in the 90s. We learned how to make muffins from scratch, some basic (and I mean very basic) meals, and some basic home cleaning. It was better than nothing, but I was able to see who had never been shown any of it before. I had grew up cooking for myself, and I was expected to help with dishes. So none of it was that new to me. But some of the kids had never touched unprepared food before. Some had never washed a dish before. It was obvious which ones were going to grow up still not knowing how to cook for themselves beyond microwave meals and takeout.

A single course isn't going to do much to help guide a kid into being a healthy adult. Basic life skills should be a graduated course in every single year of grade school. It's the only way to engrain it into everyday life.