It's a great school, I have been several times. It is expensive but luckily I had a sponser. If you can, try even the one day course if they still offer it. You spend about 2 hours in the class room discussing vehicle dynamics and then go out and put it to use. We got over 150 laps in on the first day. Forget about going out and trashing cars, they restrict you pretty much in the first two days (no passing, can't even get close to another car). Eventually they find out who is faster and put them together in a group. We had two to three groups at any one time, one group on the track, the other discussing what happened. If you go for the full three day event, you actually race on the last day.
Things you will learn. The proper way to take "the line" including heel and toe. Mass vs hp vs torque vs polar moment of inertia. These cars are extremely light with a full areo kit. The tires look tiny but given that it is soo light it is all the car needs. We were allowed to take our own cars on the track for 15 minutes at the end of the first day and most people ran off the course, not realizing that you production based car cannot even come close to a F2, even if it only has 140hp.
One thing, I did all my courses at Shannonville where there are no gaurdrails and a trip in the grass was uneventful. Mosport is different unless they are not using the main course.