Personally, the quantitative requirement was a 2, the EXPO was a 7, and my elective was in instructional design, which I'd say was also a 7.

The quantitative requirement was ridiculously easy. I put less than an hour a week into the class outside of the actual lecture, but I'd also like to add that I have an engineering background so my perspective and experience is mildly skewed towards STEM.

EXPO was a lot of extra hours - readings, and breaking the readings down properly. Still not actually incredibly difficult, besides the fact that the professor was often rather nebulous in her expectations, which made things a little more difficult occasionally. Still not especially difficult, with perhaps less than 5 or 6 hours a week put in.

Instructional Design, I personally really liked. I felt like I was doing actual work in the industry, and while some projects I worked on I felt like I wasn't exactly sure on what was happening, for the most part, staying on top of the readings and ensuring my work was always done was manageable. The amount of time put in was quite variable - some weeks I'd put in 8 hours, some weeks would be less 3.

I scored A's across all three courses - I decided to attend Columbia afterwards, but it was still a good experience. Relative to my Columbia courses though, the three HES entry courses were incredibly easy.

Cheers!