Colorado students are planning to walk out of the state’s mandatory assessment this week and protest at the state Capitol, the latest in growing student pushback against high-stakes tests around the country.

In Providence, R.I., students recently dressed up as zombies and marched at the State House; in Oregon, students are organizing an opt-out campaign to persuade other students not to take state standardized tests; in New York, California and other states, students are increasingly opting out of standardized testing.

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