In short, the overrepresentation
of exiters matters, but it accounts for only a small fraction of the estimated negative effect of charter schools.
After again correcting for the overrepresentation
of exiters, the effects of attending a newly opened charter school were -0.17 standard deviations in reading and -0.28 standard deviations in math, or almost twice the average effect reported above for all charter schools in the state.
Not exact matches
Looking separately at the effect
of attending a charter school for
exiters reveals that the effect
of attending a charter school is, in fact, considerably more negative than for students who were observed first in a traditional public school and remained in a charter school throughout the study period (see Figure 2).
Other would - be
exiters wondered how they'd keep track
of THEIR kids if they quit.