Fun for a while
This game was a must for my HSM-obsessed pre-teens. The graphics are a little shaky, and the singing -- which is almost always a duet -- can be tricky. Most of us sing both parts of a duet as a melody, and these songs will have you sing one person's whole part of the song, be it melody or harmony. That can make it challenging, but definitely educational if your child is interested in music.
For those that are just looking to sing along with their favorite high school kids, it's great fun, though somewhat limited in scope. There are only so many times you can sing along to the same songs. As a parent, you may regret buying it unless you've got sound-proof walls. :-) The kids love it, though!