So I have been through two CCW classes in 2 different states, both of which were relatively similar, while the states are almost polar opposites.
My first experience with a CCW course was in NY, upstate to be exact(er). Very rural, western NY. I took the class almost as soon as I turned 21(aka 5-6 years ago). The class was taught by the leader/trainer/manager of the county SWAT/drug team. The guy was literally an operator. He was very knowledgable. Initially we went over why we were there. Next was firearm safety, followed by firearm instruction (what, where, why, how). Next was ammo. The largest portion of the class was devoted to the legal use, misuse, justifications, and ramifications. Use of deadly force was gone over. However there were several folks there who didn't really use firearms and had only just gone to their hunter's safety course (required in NY before the CCW class) and still were extremely new to firearms in general. And there were also a few who had questions that kind of went off topic, so it didn't get as detailed as completely possible. I was not dissatisfied and I think it was relatively useful.
Fast forward to now (aka within the last few months): Colorado. I took a CCW course here very recently and whilst it had very similar undertones, it was slightly different; in a good way. The instructor was an NRA certified pistol instructor/trainer/firearms coach. The class was NOT NRA sanctioned, as is allowable by CO law, just a bit of legalese for the NRA to CYA(or theirs to be exact). The instructor (two of them actually) was VERY knowledgable. He was not LE, but he had trained LE. He was also a competition shooter. Very opinionated, but he used it mostly for comic relief. The class went IN DEPTH into the laws of CO/Utah (Utah law says they will reciprocate with CO IF you take a course that they sanction and their laws are slightly more strict, so we followed theirs basically). Went through in depth scenarios and stated very clearly what was required to draw, let alone use, a firearm in self defense, many many times: if you feel you are in mortal danger, there is no escape, and there is no other way to stop the threat. And another thing he harped on was that you "Shoot to stop the threat" and not a word/show of force/bullet more. He also made sure to suggest that drawing your gun MAY not be the best idea. If you can "surrender" the requested item, or somehow placate the threat without putting yourself in danger, that MIGHT be a better option. After going through the specific laws themselves and him also explaining them in lay terms, we moved on to firearms instruction, use, techniques, ideas. Bullets were touched on, as well as the permit application process. It was a great class and the only way it would be better would be a practical portion.
All in all, both classes served their purpose. And though I don't remember the initial class as well, I think it was informative enough for the time, though I think a more thorough look into the specifics of the law would have been extremely applicable. I'd say that if you didn't get even this minimal (IMHO) quality of instruction, you should seek it out. I think an in depth look at the laws in your state given by someone who has experience with and applicable to those laws is paramount, as also reiterated by other experienced persons here. The only addition to these classes that I wish was given was a practical application. An initial qualification to be able to prove you can shoot a pistol and then a scenario. IDK if that's possible/allowed or even safe, but it would go a long way to boost my confidence that anyone who takes that course has a basic, working knowledge, of what could happen in a very vague 1-case scenario. Like I said, I'm not sure that's a good idea, but at the very minimum I think a 10yd qualification shoot would not be hard to implement and would give participants some confidence in themselves and maybe even a drive to continue improving.
Edit/add: I know, a long post with even MORE writing, my apologies. I am looking at getting some training in practical shotgun use as I've practiced with my chosen home defense weapon at the range to acquire shooting/aiming proficiency; I've practiced at home to gain reloading/handling proficiency; and I've practiced at home to gain situational/movement/handling/home defense proficiency. The shooting/reloading/handling I feel I have acquired good basics, but moving through the house has left me nervous were I to do it in a real situation. I don't believe I should be able to "clear" a house, but even just my small scenario: lock bedroom(upper floor), move to bathroom(overlooks the middle level/stairs/bedroom door), exit bathroom to gain the best vantage point of the house(minus the lower level and basement) and to be able to cover the largest amount of area with me having the tactical advantage; leaves me worried that I don't really have the knowledge necessary to really defend my home. But that also leads me to wanting to get a practical course with my pistol as well because having experience with HD is great, but that doesn't cover the vast majority of the rest of my life which is lived outside my door.