Gator if you are attending a CVR-PCA De event they pretty much spell it out here, http://www.cvrpca.org/de/forms/06_de_guide.pdf They explain the different run groups, as a matter of fact at this link they explain the whole event pretty throughly.

Lime Rock is a fine track to learn on, its all corners so you are kept pretty busy. The condition of the track is poor compared to a few others I've been to but its in your back yard, might as well get some experience there.

I cannot believe anyone can move from Novice to advanced in 3 events unless your Micheal Shumacher. I can tell you it ain't gonna happen at CVR-PCA and thats a good thing. Green run group is novice and you will be there at least for 3 events and they don't like moving anyone up unless they have been on more than one track, in other words, 3 events in the green group at LRP might not get you into the yellow run group until you have done the Glen or Tremblant. You should be heel/toe down shifting consistently and competently, consistently hitting all your apexs, not be distracted by cars passing you and staying on the "line" to get signed off to solo in the yellow run group. This means you can do events from here on without an instructor. You might be able to solo for a session or two if your instructor feels your ready.

The CVR-PCA has a reputation for being conservative in advancing students but that also means its safer and you are more likely to drive your car home after the event, unscathed. I have had about 7 events with Trackmasters, which is also an excellent school with an excellent reputation and they won't advance a student from novice to intermediate until the student has had a minimum of 3 DE events.

Read the info at the link I included above and all your questions will be answered regarding DE events with the local PCA club. Yes LRP is a rough track but its a good track to learn your fundamental on. Lets face it, anyone can go straight fast, its the corners.