Sean,
You'll probably want to use different pressures for autocrosses versus driving schools (tracks). It also will depend on the tires. When I ran my car at Buttonwillow Raceway I used 37 front and 34 rear (cold). Seemed to be ok but I didn't spend too much time trying different pressures.
For autocross, because the tires don't really have a chance to get hot, I'd start about 3 pounds higher.
Remember, to reduce understeer, raise the front or lower the rear pressures. I doubt you'll have to contend with oversteer.
Louis