Pros
As a lead teacher who started as a teacher-in-residence, I had multiple coaches who coached me on how to become a better instructor, make my curriculum more rigorous, implement structures and routines for students in order to set culture in the classroom, and how to manage my time to be the most effective. As a teacher coming into this network as a "student", I felt welcomed, appreciated, and a part of a team. I truly do love my job, and care for my students even more.
Cons
Achievement First is still a growing network, and with growth comes some growing pains. Communication from top (management) down (teachers and non-instructional staff) can sometimes get muddled, and while feedback is always well intentioned, it doesn't always appear that way. This is both between teacher-to-teacher and management-to-teacher. As a network, we are slowly getting better.