Madison School District Administration (PDF):

1.
In total, MMSD has 365 open enrollment enterers and 1294 open enrollment leavers for 2016-17; among those 1294 leavers, 58% have never enrolled in an MMSD school.

2. The net effect of open enrollment decreased by 70 students. The number of open enrollment leavers decreased by 21 students and the number of open enrollment enterers increased by 49 students.

3. The number of new leavers decreased by 51 students.

4. The most common grades for new open enrollment leavers are 4K, KG, and ninth grade. The most common grades for new open enrollment enterers are 4K, eleventh, and twelfth grade. Open enrollment leavers are disproportionately white while enterers are disproportionately students of color.

5. Open enrollment leavers are clustered around the outskirts of the district and most often attend the closest suburban district to their home.

2016 Surveys: “Leavers” “Enterers“.

1. The two most common reasons parents cited for transferring their children out of MMSD were the school has a better academic environment, 26%, followed by the school has a better culture or climate, 23%.

2. The top two programs in the other district that influenced parents’ decisions to leave MMSD were Advanced learner programming, 22%, and Advanced Placement courses, 15%.

3. The most common districts parents transferred their children to were: Monona, 21%, McFarland, 17%, Verona, 14% and Other District, 13%.

Much more on open enrollment, including the 2009 survey, here.