yeah there is a 1 day intro to racing class thats half in the Neons on an autocross and then the second half in the open wheel formula dodge school cars (open wheel) which is just lead-follow around the track behind and instructor in a neon. and then there is the 3 day racing school which is 3 days in the school cars. the 3 day is a good class, you learn a lot about vehicle dynamics. but if you want my honest opinion, save some money and do one of the driving schools. yeah its nice to say you got to drive an open wheel "race car" around a race track, but there is a lot more applicable stuff you can take away from the driving school. unless of course you are actively pursuing a career in race car driving, then the 3 day is the shit.
although Seca is a GREAT track, probably my second favorite American track, it does loose some of its allure after you got paid to drive around it. after a 100 or so laps its just work again lol.
as far as lime rock goes, they should be there. it might not be on the calender yet because thy don't have enough sign-ups. you should give them a call.