"Knowledge of the instructor far above the trained theme!"
"The thing I liked most was the instructor's teaching skills!"
"The things I liked most were the teacher's clarity both in presentation and spoken English"
"Examples from real world, not like e.g. wikipedia"
"We were 'forced' to think ... Our attention was up all the time, which was great"
"What I liked in particular was the deep knowledge of the instructor and the sense of humor"
"What I liked in particular was the way we discovered patterns"