Boohbah was kind of a weird show. If I did enjoy it as a kid, I enjoyed it because of how silly it was, not because it was meant for kids.
In the end, if you're going to expose a child to educational television, make him or her watch Teletubbies, Sesame Street, or Super Why.
But if you really insist on having your child watch Boohbah, go right ahead. I'm not gonna stop you.
I give it 3 stars, because 3 seems generous enough.