More of the same. Experimental group did worse. Rhee needs to go, and so does this goofy program.
Just tables, this time. (I didn’t think the graphs were all that useful, plus they took a long time to make, and I do have other things to do.)
First, the experimental group of 15 middle schools where the kids were bribed to do the right thing; these are the percentages of students at those schools scoring ‘proficient’ or better in each of the years 2007 through 2010. The last three columns look at changes over time, and the bottom right-hand corner looks at average and median changes. Here goes:
And, next, much the same thing, but for the control group (where the kids were NOT bribed):
Once again, in every single instance, the changes over time in the control group were more favorable than those in the experimental group. (You do recall that -1.80 is higher (i.e., less bad) than -2.40, right?)
Enough said and done. Please keep your promise, MR!