The test scores for most charter schools, like most public schools, declined sharply on the new Smarter Balanced tests of the Common Core.

Rocketship charters, in particular, did poorly.

The typical response of charter leaders was not to complain that the tests are biased and unreliable (which they are), but to say, showing grit, “We will have to up our game.” I suppose that means they weren’t trying hard enough until they got the scores.

Will the sobering news burst the charter bubble? Of course not. Too much money riding on their proliferation.