I found most courses to be pretty easy to get through but when I ran into issues with how quizzes were graded from a Mr. William Whitley who is an instructor that won't allow anyone to see what they get incorrect or correct for that matter on their tests. I complained and absolutely no one would help find a solution. I was treated like a student and with no regard. I followed all the procedures to make my complaint but heard nothing back. I know from personal experience that seeing incorrect answers on homework and tests helps me to understand where I went wrong and what I need to either review again or change. Sometimes, most of the time, it's an error due to how the system wants to see the number vs an actual incorrect answer. I would recommend finding a school that is much more focused on teaching their students rather than just whizzing them through the courses, good, bad or indifferent.