If you're lucky, you've also gotten to attend some classes that you really wanted to go to, especially as a trainer. You sought out training related to your interests, and your department signed you up. It's these classes that are so disappointing when they aren't of the quality you expect.
When instructors are perceived as doing a poor job for whatever reason, that detracts from the pleasure of learning. Sometimes this perception can come from an apparent lack of preparation, lack of knowledge, or even a lack of training skills. Your perception of these things can be influenced by many different factors, including problems with equipment and the training facility, illness on the instructor's part (or yours), scheduling difficulties, and a host of other concerns.
Of course, how the instructor manages these problems when they occur will have a lot to do with your perception of his or her training skills and, ultimately, your enjoyment of the class. Who has not taught a class where the projector bulb burns out, or the computer won't boot-up, or ammunition keeps failing, or the training vehicles won't start, or something similar? We all have. That's when the trainer's true mettle shows through.
As trainers, we are both blessed and cursed. Blessed, in that we are given the opportunity to pursue advanced knowledge that can have a real effect on our officers' lives. Cursed, because we are doomed to not just absorb the material we are being taught, but also to analyze the skills—or lack thereof—of the trainers we are listening to.
Next time you're attending a class, pay attention to the way your instructor handles things. (You probably already do anyway). Note what he does that seems particularly effective, and watch for how she handles problems that come up. After class, maybe on your drive home, think about what you learned, and how you felt about learning it. Then, see if you can draw connections between the instructor's training skills and level of preparation, and your level of learning.