joe del grasso and nathan saunders of washington, d.c. >> city schools are terrible because of unions like yours. >> i would disagree. we have progress as a result of unions. >> save our schools! >> three days before saunders led this protest march to complain about plans to pay teachers based on how well the students do on tests. the protesters evend an antitest song ♪ i think i know why the union doesn't like testing. your results are awful. they are among the lowest in the nation. >> you make an argument that it is the lowest in the nation based upon the test scores. now, i would say that ours can get better but i would say that ours are -- >> your predecessors the unions have been saying that for years. >> the unions have a advocated for high quality ed glace but not achieving it. >> our test scores are not what we choose to focus on. we choose to focus on teaching kids. >> how do you know if they are learning anything if you don't test them and compare. >> i know my kids are learning when i look in their eyes. >> the protesters had celebrity is support. actor matt damon. he was a