As I understand it, university-level Mormon literature courses have been taught since the late 1970s, mainly at BYU thanks to the efforts of Eugene England. In recent years the number of courses have increased, and currently exist at least at BYU, LDS Business College and Utah Valley University.
And there have been courses with Mormon literature components taught elsewhere as well.
But the university level isn’t the only place where Mormon literature courses could be taught, and as I’ve already noted, the idea of using Mormon writing to teach children, at least, occurred to Parley P. Pratt quite early. Now, I’ve come across another course, this one aimed at Relief Society sisters in 1948. And this course was apparently taught–at least in some Relief Societies. Still better, its author was a recently retired English professor who had taught for 19 years at New York University.