Hi, I'm an ADHD diagnosed individual who attended WGU. Specifically the "Cybersecurity Degree and Information Assurance" program. I understand the interest in competency based learning, I also came into it due to traditional methods of schooling just not working for me and perhaps a "do it on my own pace" would work better. Unfortunately I dropped out. Even though it is "at your own pace" you still have to complete X amount of credits per 6 month semester and I just couldn't stay engaged long enough to do so. Granted, you are assigned a "mentor" where you do weekly calls to clarify your goals for what you are accomplishing in each class per week. These calls are mandatory and count as attendance otherwise you can be suspended even if you are doing course work and passing classes.
That being said, I do recommend giving WGU (or any other competency based university) a shot. Doesn't hurt and WGU is also pretty cheap all things considered. I have no grievances against the school itself. One of my best friends got his masters in teaching from WGU's grad program. It is a legitimate school with real world success.
Classes themselves vary depending on the type of class it is. WGU is 'competency' based in that there are no A,B,C,D, or F's. It's either PASS or FAIL. For some classes, like IT classes that are designed to prepare you for a certification, "passing" the class is accomplished by actually taking the industry wide test itself which is not administered by WGU, but you report your success (or failure) to them and that's how you finish the class.
Personally, I think this is the one thing that WGU does better than any other college out there. Don't care of its an $100k Ivy League or not. All colleges with an IT program will have classes that are designed to teach the material for popular industry wide certifications, but because they are college classes what matters is did you do your homework, pass quizzes, and the final exam? If so, yay you got your degree... But did you earn the certifications that the employers are looking for? All you walked away with was your diploma unless you took the time to get the certifications on your own. WGU lets you walk away with both the diploma and a bajillion IT certifications to plop on your resume because you are REQUIRED to get them otherwise you don't graduate.
Other classes like general education stuff usually operate off of an end of course test that is designed by the professors of each field within WGU. Some stuff is outsourced like math classes aren't made by WGU professors and instead they use the Pearson View ALEKS online stuff if you are familiar with it.
Since you are focused on switching to IT, I would recommend that you actually try to earn an IT certification on your own prior to trying WGU. It's cheaper (keep in mind WGU *WILL* pay for your certification attempts) and its a way to get credits prior to admission. WGU is very strict with their transfer credits and once you are admitted they cease taking new things. The other reason why I'd suggest to try to earn an IT cert on your own is that it is a perfect way to test your ability to self pace and self learn the material. You might love it or you might hate it.
If you do try, I recommend an easier certification from CompTIA such as Security +. Network + can also work and both are counted for certain IT degrees within WGU so if you pass its beneficial. While I did not earn an IT degree, I do have certifications and do quite well in my career so the degree isn't 100% from personal experience. If you have any questions about WGU or earning IT certifications feel free to reply!
Good luck