You can't do it growing hydroponically. It means growing outside somewhere where people aren't likely to see the plant. There are many places out there.

Alright, look at it this way, hydroponics require a larger setup, which means less plants and less yield. If you do it outside, you can grow more plants for a bigger yield, it'll just take longer. If you have your heart set on hydroponics, there's a lot you're gonna need to learn about, it's not something you just jump into. Outside growing will be easier. Plus, if you grow inside without your parents permission and they find the plants, think of how insanely pissed they will be. If the cops find your indoor grow, you'll be in a shitload more trouble than if they find the plants outside in an area that you don't own, since they have no way of proving, or even finding out, that you did it. Whatever you do, think it through. Buy some books, and study up. Again, good luck.