No contest! WGU!
I'm currently enrolled in the school of business at WGU, and could not possibly recommend more highly - with the single proviso about the competency-based system. Unless you can set a schedule and stick to it, no alibiis, no excuses, no exceptions, go somewhere - anywhere - else; you'll never adapt to a competency-based system and be completely miserable from the moment you start until you ultimate thown in the towel. If you want to be completely free of seat-time, being hobbled with cohorts, and real authority to set your own pace, and none of those short-term 'residencies' there simply is no other choice and nothing comes remotely close!
Go to the website and browse through the specializations at the master's level in education; follow the links and download the program guides for the ones that interest you; this will give a bird's eye view of what you'll be doing and how you'll be doing it. Pay particular attention to the capstone but don't be intimidated by it - everything you do in the program will be leading up to it, and knowing what's coming next will help you better prepare for it.
EWOB is the orientation - learning styles, study skills, navigating the web portal, and the computer software that will be required, how the competency-based system works, how to work with your mentor, developing your academic plan, that sort of thing. They have made changes to this since I took it, so I'm not absolutely certain about the time-frame, and the school of education may be slightly different from the school of business, but you should be finished quite easily within two or three weeks, then you'll be assigned a mentor and together you'll set your academic plan for the next 6 months. [Don't panic! It's tough, but not insurmountable! And the mentors truly excell at making the capstone as quick and painless as all the other assessments that lead up to it.] Most of the mentors have PhDs and there is a mix of traditional brick-and-mortar and DL, and every one of them works full-time at mentoring for WGU not as a sideline to pick up a few quick bucks as some mentors and adjuncts at other colleges.
Being competency-based, the focus is on passing the assessment, but how you prepare for it may be a small, short-term course (usually limited to 12-16 students, and 6-12 weeks in length), CDs and other multimedia, (my favorite) self-directed study; that's entirely up to you, but never hurts to get help deciding from your mentor. You will get a score but it will be based on specific rubrics that you'll know during your preparation; a passing grade is equivalent to a 'B.' Because it's competency-based, it's necessarily about performance rather than rote memorization, but you will have several proctored multiple-guess exams and a couple of proctored essays - and I would imagine all these pre-assessments that you can take as a final check before the RealDeal(tm) so you completely bomb.
Don't hesitate to ask questions here or with the pre-enrollment counselors. Not that it matters, but with the new term starting January first I will have even less 'spare time' than ever so I doubt that I will be active on this forum or even lurk.