I will protect your pensions. Nothing about your pension is going to change when I am governor. - Chris Christie, "An Open Letter to the Teachers of NJ" October, 2009

Sunday, August 9, 2015

Blogging Recommences

I love Poland!

So, how's your summer been?

Blogging restarts after I shake off some jet-lag; standby...

Chopin plays the... thing.

ADDING: You really should read the last post; it's pretty good, even with all those scatterplots:

This is the graph of the mapped proficiency score (x-axis) against the actual mean scale score (y-axis) on the NAEP for Grade 8 reading. The NAEP also tests math, and in Grade 4; go back to the original post to see those graphs. What you'll see in every case is a "cloud" of points, which means there is no meaningful correlation between the mapped proficiency score a state sets and its actual performance on the test.
More to come.

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