I found out recently that Wisconsin actually still has a version of the OWLS called "Students and families" or something. I think that name kinda keeps those non-trads w/out kids or who are single out of the group. I am gonna work on it.
OWLS aren't really that important unless you need a certain score to get accepted into NEWT-level classes. If you're applying for a job at the Ministry of Magic they generally don't even look at your OWLS scores---usually they consider how well you did in your sixth and seventh years to be more "representative" of your abilities. It's really on the low end of the scale that they pay more attention to them: if you don't do well on your NEWTS then you can sometimes fall back on them, but that doesn't really cut it if you're trying to get into the better postseconday programs./sorry, I had to