http://www.ednewscolorado.org/2012/03/29/35547-state-board-to-take-on-sb-191-... With Colorado's new teacher evaluation law comes a need for a new appeal process, one that allows teachers to appeal on the grounds of "incorrect use of data." I'm not exactly sure what that means, but I do predict one thing: state-level teacher unions will hire their own psychometricians to augment their legal services, which means districts will need psychometricians, too.