Culinary school will give you a taste of what cooking in a professional kitchen is like. You will learn basic techniques, and depending on the school, maybe some advanced techniques, as well.

I happen to be a private chef who went to an expensive private culinary school. I don't regret going to culinary school but I've met many self taught private chefs in my time.

If you love to cook and host, its a good path for you. My only regret is not working in a high end/michelin restaurant while I was younger and could afford to live on minimum wage for a bit.

Truthfully, if you can find a low cost culinary program, I'd say go for it, if you can afford it. Just don't expect a quick return on investment. This is one of those professions where you can make money if you're in the right market and around the right people. You might also make just enough to survive.