CREDO’s New Orleans “Learning Gains” a Sleight of Information
According to Emily Langhorne of Forbes, education reformers should “rejoice” because in May 2019, the Center for Research on Education Outcomes (CREDO) released this summary and accompanying presentation of New Orleans charter school “learning gains.”
According to CREDO, New Orleans charter school “learning gains” are impressive when compared with those of the state:
In reading, New Orleans students experienced stronger learning gains in 2014-15, 2015-16, and 2016-17 compared to the state average learning gains. In math, New Orleans students posted greater learning gains in 2014-15, similar progress in 2015-16, and stronger growth in 2016-17 compared to the state average.
Now, what CREDO has not released are actual average scores on the tests, nor do they offer any caution that greater “learning gains” are not synonymous with higher average test scores.
It is possible to have a fantastic “learning gain” and still fail a test.
It is also possible to do quite well on a pretest, with better pretest outcomes increasingly restricting how much of a “learning gain” a student can have on a post-test.
For example: A student scores a 42 out of 100 on a pretest and 60 on a post-test. That’s a “learning gain” of 18 points. Still an F (below 67), but an impressive “learning gain.”
Meanwhile, a second student scores an 89 out of 100 on the same pretest and a 95 out of 100 on the post-test, for a “learning gain” of six points. Note that the second student is well above passing on both pre- and post-test and actually improved from a B to an A (93 is the threshold). Note further that the highest CONTINUE READING: CREDO’s New Orleans “Learning Gains” a Sleight of Information | deutsch29
