Edushyster noticed a strange phenomenon.
A charter school received a $1.5 million grant to close the achievement gap.
Edushyster noticed that its first class had 47 students. But 17 eventually graduated.
Then it was explained.
This is called success by attrition. It is usually associated with miracle schools, where 100% of the students graduate (of those that make it to senior year). For more on miracle schools, check Gary Rubinstein’s blog.