Ha, I find the same problems with me questioning my ability to name English tenses! Sure, I am a native speaker but I was never actually taught any formal grammar. This is why I worship at the alter of Teacher's Books!
The main problem children (the Jordanians) have gone back home now so I can sleep at night now, but I am assessing what I did right and wrong with the class. Some of the things that were going against me were things that I can't help (being a 20 year old girl who's only 5"3) but I also went into the classroom for the first time I didn't establish myself as a strong powerful teacher. If I had to do it again, I'd go into the classroom with less smiles and I wouldn't try to be 'down with the kids' as much. I tried to gain their respect by being 'with it' as opposed to gaining it through control.
I have only one more week left at the school (am going to Japan to study for a year) but I think that I would only do another summer school if I'd had sufficient training in discipline. It's been a long, hard time teaching but I think I've grown as a teacher (and as a person) through it.
To delmobile, good luck. I really mean it. Go in and kick ass. Never try and justify yourself and, as one of my superiors told me "shit on them from the start!"