I just want to add to my previous comment regarding the selection group before me: At least one of them worked at a high level in QA as a Federal/Civilian Service employee, so that can clearly compensate for education, but you better have one or the other to be competitive.
Congrats on your selection! 4th time's a charm, evidently.
Or ideally having both to be competitive. But there's some truth to where you work making a difference. I was told repeatedly during my application process that being some kind of government or defense employee was a good boost. Of course, it didn't help that I wasn't. But there's lots of things to do to "compensate", such as level of education. Community service 2-4 times a month certainly helps. A very strong motivational statement can make all the difference. If you're jokingly accused of hiring professional writers, it's probably not too shabby. Interview appraisals also play hugely. Having 10/10 interviews with a couple CAPTs is going to help you a lot, and a senior officer willing to volunteer their time to talk on the phone or meet in person is typically going to want to get to know you and help out especially if they see you as a good fit. Best to take advantage of it. Without the OAR to use as a benchmark along with a highly competitive selection program, there's lots more hair-splitting everywhere else. Heck, even the universities you attended can help.
I feel the more people realize just how involved this application process is, fewer applicant mistakes and a reduced degree of [innocent] ignorance will be present. Learn the PA, read pertinent documents, ask your recruiter questions, ask officers in the community questions, check if you need waivers for anything. Nothing kills me more than when I hear something like "Oopsie daisy I didn't know about this straightforward detail" and voila, non-select. Good luck everyone.