According to our class reading, what effect does open enrollment have on student's educational achievement?

$$ In terms of district$-$level characteristics, students tend to transfer out of above average school and open enroll in even higher achieving schools.

All of these are correct

On average, students who open ehroll but eventually return to their see a long$-$term loss in achievement.

On average, students see a long$-$term gain in achievement after three years.

$$ On average, students see a short$-$term$-$loss in achievement after their initial open enrollment.