http://shankerblog.org/?p=8579
Matthew Di Carlo at the Shanker Blog digs into the realities of the latest CREDO charter school study. While superficial readings of the report will conclude that charters seem to be doing better than was seen in the last study, there's a lot to keep in mind about relative performance, small effect sizes, sampling effects, and the judging of schools using only standardized scores in math and English.
Matthew Di Carlo at the Shanker Blog digs into the realities of the latest CREDO charter school study. While superficial readings of the report will conclude that charters seem to be doing better than was seen in the last study, there's a lot to keep in mind about relative performance, small effect sizes, sampling effects, and the judging of schools using only standardized scores in math and English.