Pros
It may lead to full time employment with a public school system. A few of the trainers were great and inspirational. It could be that program is more successful in other areas, I can only speak to what I experienced in DC.
Cons
The DC Teaching Fellows program (summer 2016) was unprofessional, disorganized, and full of condescension for it's participants. It was unbelievable to me that the trainers/organizers treated these very impressive and well educated participants with such such a stern, authoritative, and frankly (at times) disrespectful approach. The demands were inhumane. The unpaid hours involve in training were extraordinarily demanding. I felt like I was in the military. It did not build me up and inspire me. Instead, the approach seemed to be one of "breaking" people. Belittling the participants was commonplace. Many of the trainers boasted of their "five years" teaching in the public school system. For some reason, they thought that this made them experts, but their performances would suggest otherwise. Most of the trainers were arrogant and unsympathetic to the problems the participants faced. I had to leave. It was a very unhealthy environment. Many people relocated from all over the country and had to support themselves during this training. The total amount that people lost (in dollars) would be staggering. I know many people who left as I did. I happened to live in the DC area, so the loss wasn't as great as many of my fellow participants.