Ernie, thanks for the terrific work you and your colleagues have done. You, district & charter educators offer very specific, practical ways to measure progress of students with whom traditional schools have not succeeded: https://www.alternativeaccountabilityforum.org/pace-proceedings.html
Researchers in Chicago use multiple measures to examine how well high schools are doing with their students. https://chalkbeat.org/posts/us/2017/11/26/new-research-takes-a-comprehensive-look-at-charter-high-schools-in-chicago-and-goes-beyond-test-scores/
Great discussion over at Thomas B. Fordham via The Education Gadfly on what graduation means in 2018 and beyond. Petrilli, Green, and Cunningham commentary may come from different perspectives, but they hit at the larger issue of why everything else seems to havbe evolved over the past 100+ years, but not much has changed with education. Appreciate what you shared above from Chicago and especially Ernie Silva.