fit2inspect,
I took the Radiographic Interpreter course 2 years ago at Hellier in Houston. I was most impressed with their facility and the Instructor. FWIW, I also took the Level I and II UT at Hellier in Connecticut (2 weeks later) and also have nothing but praise for the quality of their coursework. Yes I learned things (RT, I still have zero hands on in UT) ) in that class that greatly aided my worth as a field QC in the power and petroleum industry.
Sadly though, I did not do a follow through and get the RT endorsement, as was "The Plan". If and or when I return to the aforementioned projects, I fully intend to retake the RTI class (at Hellier) and immediately (prescheduled the next time) take the AWS endorsement exam.
Having been to 2 of his facilities (If you go to Connecticut, you stand a good chance to meet one of QC's legends, Chuck Hellier as I did), I can say that it is excellent and have never heard of anyone not getting their $$$ worth.
As far as NDE work goes for me...my hands on experience is to call ACUREN or another local provider of such services.
I recently (2/21-25th/2011) took Level II coursework in MT and PT in Webster, TX. The school was good, but would have to say something was lacking. Maybe it's because I paid for the former and the latter was company sponsored?????