National Center for Education Statistics. National Dropout Prevention Network. While all three groups were enrolled at the nearly same rate at five years of age. References National Center for Educational Statistics. National Center for Educational Statistics.
Retention is expensive.
References Grissom, K.B. and L.A. Shepard. Repeating and Dropping Out of School. A Meta-Analysis of Research Studies. McCollum, P., and A. Cortez, O.H. Maroney, F. Montes. Meisels, S.J. and F. Liaw.