OP, now you know why the corrections job pays $19.37 an hour. Terrible hours, rotating shifts, inconsistent days off, working weekends and holidays with unpleasant people. Hey, this sounds like nursing!!
I suggest you make a list of pros and cons (pun intended) of staying at your current job for a year and saving money vs switching jobs and going back to school. Also check out starting salary range in your area for new ADN nurses and job availability. It may not be what you think it is.
If you are worried about taking college classes, start with one easier pre-requisite class and do it online. You can continue working and see if this is really something you want to do.
Ultimately, if you want to go back to school, you will find a way to make it happen. It won't be easy, but what you are doing now isn't either.
I wish you well in making your decision