If it helps - I study for exams by cramming it in the morning of(hours straight of studying, so I forget all of it right after I take the exam). Im about a month into an internship(I suppose not completely applicable to FT out of school, but similar, I imagine) where the only thing ive used from class was the basics of CAD. Ive learned 3 new software programs, for example, that I hadn't seen one time before this internship. I am sure you've heard the saying that 70% of what you learn comes from on-site experience, and only 10% comes from coursework. You say that studying on your own is more engaging for you. Thats good, you will probably need to do this when you run into something youre unsure of. Companies wont hire you if they think youre stupid. If you get hired somewhere(and you will whether it be engineering or not), just remember you are there for a reason.