The Center for Research on Education Issues (CREDO) has just published its 2013 report, "National Charter School Study". CREDO Researchers looked at test data from charter schools in 26 states plus DC. Ohio was one of the 26 states. This study follow up on their 2009 study which garnered a lot of attention for bringing to light the poor quality of the nations charter schools.

This new study finds, despite charter schools being able to screen for the best students, only marginal improvement over the past 4 years

25 percent of charters outperformed traditional public schools in reading while 29 percent of charters delivered stronger results in math. That marked an improvement over a similar 2009 study by the same research team.

But 56 percent of the charters produced no significant difference in reading and 19 percent had worse results than traditional public schools. In math, 40 percent produced no significant difference and 31 percent were significantly worse than regular public schools.

The marginal improvement comes not from improved quality of charter schools in general, but in the closure of more poor performing charter schools lifting the over all average performance.

In Ohio, the charter school experiment is failing miserably. According to the study, Ohio's charter schools got worse over the last 4 years, and now dwell at the bottom of the performance tables. Ohio students who attend charter schools are losing the equivalent of almost 3 weeks of instruction in reading, and an entire grading period in mathematics. That is astonishingly bad news for the 5% of Ohio's students who attend charter schools.

The following table was taken from table 14 (pg 52 of the study)

State	Reading Days	Math Days
Rhode Island	86	108
DC	72	101
Tennessee	86	72
Louisiana	50	65
New York	36	79
New Jersey	43	58
Massachusetts	36	65
New York City	0	94
Michigan	43	43
Indiana	36	14
Illinois	14	22
Missouri	14	22
California	22	-7
North Carolina	22	-7
Minnesota	14	-7
Georgia	14	-14
Colorado	7	-7
Florida	-7	0
New Mexico	0	-29
Arkansas	-22	-22
Utah	-7	-43
Arizona	-22	-29
Texas	-22	-29
Ohio	-14	-43
Oregon	-22	-50
Pennsylvania	-29	-50
Nevada	-108	-137

You can see from the following graphs of performance in 2009 vs 2013 that Ohio's charters are getting worse, and in math, much worse.

It is time to reassess Ohio's 15 year, billion dollar, charter experiment in light of these results and put an end to boosting charter schools at the expense of public schools. The experiement has not only failed, it is getting worse.