All the schools are pretty much the same good quality. However, if you've never driven Laguna Seca then go with Skip Barber there. Thunderhill and Sears Point are fun but not the same without the hill climb and the Corkscrew.
Here's a tip for Laguna Seca. I would be at 6000 in third gear going up the hill. You need to back off the throttle and start braking right BEFORE you crest the top. My Elan got so light flying over the top that there was not enough braking area to whoa it down to make the Corkscrew otherwise.
Skip Barber does the SRT High Performance Driving School for new owners of an SRT. My wife is going to go spin her SRT4 out and learn how to mow down some cones on the slalom course soon.
Here's another tip. If you signup to go stand-by with Skip Barber you can save about $1000 off the total price. They never fill up the classes so you almost always are assured everytime to get in. They just ask you not to tell the other students so they don't get pissed off is all.
When my son went through the fastest student turned out to be a women. She was several seconds faster then all the instructors because she only weighed about 90 pounds. She put on a driving demonstration. Go-Karter from a little squirt.