NO MO’ PISA, requests a group of 120 academics from 12 countries who signed a letter proclaiming that the OECD’s Programme for International Student Assessment (PISA) tests for 15-year-olds are killing “the joy of learning.” The letter charges that the tests ”distort the curriculum” and “reduce teachers' autonomy” while increasing child stress levels and churning out results that are “widely known to be imperfect." Read the full letter (and its call to end the PISA test for good) here.