After reading about Appleseed for years, I finally made it out to an Appleseed weekend event in Davilla, TX earlier this month.
Appleseed was worth the trip. They have skilled instructors, a challenging course of fire, and the weather (rain) made things interesting. I'd never shot in heavy rain and mud before. It was actually pretty fun.
The opening course of fire was against "the redcoats". Redcoats are scaled targets simulating British Redcoats at ranges of 100 to 400 yards. This is a test to see where your skills are at before marksmanship instruction begins.
Firing from prone, I center punched the 300 and 400 yard targets with my AR-15... but overshot the 250 yard head.
During the weekend we got practice using standing and sitting positions as well as prone. I needed the practice pretty bad. I'm in much better shape with both standing and sitting positions now. Also learned to use the sling to aid my accuracy. Seemed to be helpful in shrinking my groups.
Appleseed was pretty fast moving. One of the big challenges was time. You have to move pretty fast on some of the stages.
The primary goal of the training is to score well on the AQT. The AQT is an extremely challenging course of fire that involves shooting challenging targets from the standing, sitting, and prone positions under tight time constraints.
If you score well (200-210+), you earn the coveted "Rifleman patch"
Learned to shoot a lot quicker during the weekend. Unfortunately not quick enough to get my "Rifleman" patch (this time).
Plan on going back next year

More info here:
http://www.appleseedinfo.org/