Honestly, I've done the management route, and went back to staffing in my home unit... now that is a challenge and another subject. After 16 years of 12 hour 3 nights a week schedule, I have taken a 4 day 10 hour job change and am now enrolled in school... so I feel that my experience might help you. My children are all over 18, and the loss of night shift differential is causing issues for us.
That being said. i'm doing online classes, no physical time spent in class, just the work at home. Having three days off a week, I spend my whole day off, all Saturday and Sunday doing school work.
When I worked nights, I stayed up and did homework until about 11am then went to sleep, many people I worked with who went to school, went to bed, then got up at 1pm to do homework, prior to going to work.
I loved nigh shift work, loved the money, but found school work more challenging working nights, remember I had been doing nights for over 15 years so I was adjusted to it, you aren't.
If you plan on going to a classroom, ignore all my advice, as I have no idea how you can spend additional time in class AND THEN have time for the homework. In fairness my internet classes are 5 weeks long, so they are very intensive.
So you can go back to staffing, but learning and adjusting to that is stressful enough, and honestly you'll need to read, and research for a year to catch up to that level of care you left, and add that adjustment, plus nights, plus school.......?
Only you can decide... but most nurses take 3 months to adjust to night shift, 6 months to get comfortable with the acuity and they aren't in school as well.