A trainer with a similar background to yours might be able to provide you with some useful context in the classroom. As of this writing, MOC course evaluations are transmitted to Microsoft on the Internet. If you're handed pre-printed forms, you're looking at old evaluations. Insist on something recent. Don't place too much stock in evaluations, though.
Most professional trainers know how to cover their deficiencies with charm and humor.
Added to most people's tendency to be generous when evaluating someone with whom they've just spent the week, that means a good evaluation doesn't necessarily indicate a good trainer. Look for specific comments on the evaluations, because they mean that a student was motivated to do more than just check a box on a form. Assume that the evaluations supplied to you are the best the trainer has to offer. If no comments appear, you can presume that nobody was enthusiastic enough to sing the trainer's praises. If a CTEC refuses to provide the evaluations, that's a major warning sign, because it means the evaluations probably aren't something they want to brag about.