Ten years ago, I looked into non-residency programs as a colleague of mine was finishing his Ph.D. program at Walden in Applied Management and Decision Sciences. At that time, the program was well respected at the Ph.D. level. I became a returning student in 2011 to earn my Ph.D. in the same program (now called Management) and I have found it challenging and in a word "robust". I have completed eight courses over the past two years (taking more than one course per quarter would require 40-50 hours/week minimum). I have completed one of two required 90 page research papers adhering to the APA writing format, and I can attest to the rigor of the program. It is designed to improve one's research abilities while also allowing a working professional to be earning a living.
Every course I have completed has had an applied component to it, and I have seen those students that started the program with weak skills fall short and not produce scholarly work. These were the students that dropped out of the program. For my specific program, I have four research based quantitative and qualitative courses to complete prior to working on my dissertation.
As was mentioned by a professor during one of my four required residencies, I do not expect Yale or Harvard to be calling on my teaching services in the near future, but the program provides a level of education to allow me to better apply what I have learned and actually contribute: That means writing in peer reviewed journals after earning my doctorate. In the end, that will be the basis of the value of the paper, not what shcool I earned it from. I will take what I know in my industry and produce research that will speak for itself. Like any program, you will get out of it what you put into it. I am glad that it is accredited and that means something to me.
Again, in regard to the value of the piece of paper, I have worked with many colleagues from "brick and mortar" programs that can not produce, articulate, present, or contribute to their profession. I graduated from a California State University and have no problems competing with "Ivy League" graduates in the real world. The best part is that in my current profession, I am the one training them in the field. Just so you are aware of my intention here, I just joined yahoo today so I could respond to this thread. Judge for yourself and find the program that works with your career and your aspirations. Accreditation is only one level of assurance in a program. Walden provides a solid program for the working professional and it may not be a good fit for everyone. Do your homework and invest in the best education for you. Best success in your choice of education.