I honestly do not think that mentalism itself belongs in children's entertainment. Mental magic might go over well with older children such as Tom Ogden's Jelly Beans routine, but actual mentalism is not going to go over with kids and in fact, they will not understand the concepts involved here.
Also, actual mentalism usually has a mentalist giving out personal details that no one could know about the individual. Now put yourself in the position of a parent for a minute, imagine listening to a strange adult telling a young child intimate details about their lives....do you see red flags poping up?!?!?!?!?! See what I am getting at?
Now, if we are to talk about performing mentalism for teenagers, that is a whole other story. I perform quite regularly for teenagers, at school functions in their high schools, proms, after graduations, Sweet Sixteen parties, 18th birthday parties and Psychic Entertainment goes over extremely well for these groups. They require a fair amount of "control" but they are always well received, especially if you plan ahead for certain contingencies as teen audiences can be like working a rough comedy club room, but if you are prepared, you will find them very benefiting.
Teenage girls especially tend to be real beleivers in the psychic sciences and eat up readings and such. Goth kids love the Bizarre performances and so give you a lot to chose from with effects using Tarot Cards, pendulums, VooDoo Dolls, and such. Teen boys love the hypnosis stuff, metal bending, and challenge stuff.
Paul Alberstat http://www.mindguy.com