Yes, most local shoots predominantly break down into two different classes: Hunter Class and Open.

You can read up on all the rules by either going to www.asaarchery.com or www.ibo.net (think those are both right; did them from memory alone)... Basically in Hunter class, you're looking at a max of four fixed pins which you can't move after you start the course, and a 12" and under length for the stabilizer. There's other little rules you can read up on on those websites, but just those two things right there will take care of you 99% of the time for your local shoots.

The guys shooting Open usually have a much longer stabilizer and are shooting a sight where the shooter dials in the yardage for each shot.