I really like that the RAD made some huge changes to its system and revamped the children's work about a dozen years ago (or maybe it's been more like 15!). It's smart having two tracks -- the "grades" and what they are now calling "vocational" aka, "the majors." I also like how they've changed the exam situation, where I believe the student can request feedback "assessment" as opposed to a strict exam.
The RAD has been one of those big ships that's hard to turn but it's been doing so (not without some angst and blood on the rug) and I think it and the students and teachers it serves are better for it.
I used to teach the Grades (and took the Boys' Major work) but dropped out from the system only because the studios I was working for (and one for which I still teach) either wouldn't allow me to enter students into exams or introduce the RAD work where I felt it might be appropriate (Boys, for example). Ah, well -- their loss...
So I do applaude those teachers that can successfully integrate the RAD into their teaching syllabi.