The Fan—
The PI drop from middle school to high school along with a JUMP in test scores is COMMON and expected. Why?
Drop outs.
This is when students can/do drop out. Who drops out of school? The less affluent who score lower on standardized testing. Drop out rates in SC approach 50% throughout the state—much higher in high poverty areas, much lower in affluent areas.
For example, elementary schools with PI's in the mid-80s and above, middle schools with PI's in the mid-60s and above, and high schools with mid-40 PI's and above all tend to be failing schools. Notice the drop in the correlation?
