Our kids have gone to ski schools at different resorts, and I have learned that no two schools are the same and philosophies differ greatly from resort to resort.
I found Kid's Mountain School to be a little laid-back. When I called to reserve, I was told they do not take any reservations for older kids. I was promised there was never a problem getting kids signed up on the day of the lessons. We didn't have any problems, but I did note that some other families were bumped, as lessons, especially afternoon half-days, were indeed sold-out.
The cost is $122, which includes lesson, lunch, and lift ticket. The classes run from 9:30am until 3:30pm.
The school does not have a main indoor gathering spot. You gather outside under a sign. It's hard to find the first time out. Park City does not do equipment rentals at the school; you are required to bring your own skis or rent before coming to class. I prefer the one-stop method. Helmets are not required; we tried to rent helmets and were told they don't rent them, due to insurance reasons. In California, we sing the helmet mantra, so it felt odd to allow the kids on the hill without helmets. About half the class was without. The older kids also don't wear class vests for the instructor to identify them.
The instructors were good, and they gave the kids a bit of a geography lesson; we had instructors from Belgium, Australia, New Zealand, Argentina, and Canada. The philosophy here is to get the kids to the next level on their own, so there is not a lot of babying here. The kids are expected to get up, carry their own skis, and keep up with the group. I personally liked the no-babying attitude, as it taught the kids to be independent.
The teachers really tried to keep the parents away. I appreciated this, as I often see parents who stick with the class and really disrupt and pull attention away from the teacher. So once the child is dropped off, it's "bye-bye daddy". The time I did not like it was during lunch. We have a habit of checking in at lunch and making sure everyone is okay. The instructors seemed really put out that we were checking and would not allow us to come into the lunch room. They got the kids and allowed them to come out in the hall. Lunch is pretty basic here: hot dogs, mac-and-cheese, juice.
The feedback from the teachers was great, and both our kids moved up to the next level. I was happy with the level of instruction here, and it takes a pretty serious approach to skiing. But if your child needs a lot of attention, you may want to look at Deer Valley, where the school does a lot more pampering.