I did not learn half as much from the course as I expected. I began with a sound understanding of grammar and found that the course is casual with grammar and teaching. I often missed questions on the quiz because of the course's peculiar vocabulary, but rarely because I misunderstood a concept. This frustrated me, but as most quizzes were multiple choice I could typically self correct without further review or learning. The 100 hours of online content took me less than 15 hours to complete; had I more fully immersed myself over a longer time I do not believe I would be any better prepared. I have earned the credential, and that is enough, I guess. I would not recommend the course to anyone who was not certain that the credential would be helpful - and please note that, especially if you have a degree, the course is not necessary to apply to most jobs.