2013 – Common Planning Time in Middle Level Schools: Research Studies from the MLER SIG’s National Project Posted on 20132017 by danzap@illinois.edu Common Planning Time in Middle Level Schools: Research Studies from the MLER SIG’s National Project Mertens, S.B., Anfara, V.A., Jr., Caskey, M.M., & Flowers, N. (Eds.) Information Age Publishing (Charlotte, NC) [Accessible online here.]