>> ravitch used to be a big fan of testing, supporting the no child left behind measure passed by president bush. which made testinghe law of the land. after a decade of tests, ravitch has changed her tune. >> i thought, i'm wrong. and that shocked a lot of people. ♪ >> ravitch notes that their importance has led test obsessed school districts to cut programs like the arts that foster real creative. >> i've seen many articles of how a child wants to somehow break free of the lockstep approach to standardized instruction and standardized testing. we, on the other hand, seem to be rushing towards the model that they are trying to shake free of. >> i've heard people say, you know, the american system needs to be one which encourages people to be curious, adventurous, taking risks, not this sort of style system where