Scott Simon, writer for Morningstar Advisor (and a financial advisor himself) has written a series of articles on how teachers are getting fleeced in their 403(b) retirement plans. What follows are links to the Four part series.
Scott does a good job of laying out the issues and though I don't totally agree with his solutions, the information is worthy of a read through. Educators, school districts, and unions need to know this stuff.
Fleecing 403(b) Participants (Part 1)
Fleecing 403(b) Participants (Part 2)
Fleecing 403(b) Participants (Part 3)
Fleecing 403(b) Participants (Part 4)
Scott Dauenhauer, CFP, MSFP, AIF