I see a push toward having undergraduate curriculums built around 8-week classes. This is mostly in the online education in the USA. Recently I have seen a number of these in sophomore or junior-level math classes. For example you have 8 weeks to cover the entire standard calculus III, and this is not a summer class. Essentially there would be four short semesters in the usual academic year, i.e. September-May. In each of these four accelerated semesters the regular material of a course is to be covered at double the usual speed.
Is there a study that looks at the result or justifies the approach?
Edit 1: Early Spring 2023
Thankfully, the university I work at mostly stopped this practice. After an 180 turn we are going back to the old format. Among the odd events was that the length of a semester was not really 8 weeks either, it could be as short as 6.5 weeks!
Edit 2: Late Spring 2023
I believe I finally understood the reason behind offering short courses. Businesses are willing to support their employees taking one course at a time. So this creates a loophole. Make a course run on an "8-week" schedule. Then student can take two courses during a semester with employer support. But if businesses change their language and say you can take 9 or 12 credit hours per calendar year, and no more than 3 or 4 hours at a time, then this loophole will be closed.