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. Author manuscript; available in PMC: 2014 Jun 1.
Published in final edited form as: J Sch Psychol. 2013 Feb 4;51(3):349–365. doi: 10.1016/j.jsp.2013.01.004

Figure 1.

Figure 1

Estimated quadratic growth trajectories of WJ III Broad Reading cluster W scores (Panel A) and WJ III Broad Math cluster W scores (Panel B) for ever retained and promoted students in elementary grades. The transition point (0 on the x axis) marks the transition from elementary school level to middle school level. Piece1 represents the developmental growth before the transition to middle school (from -5 to -1). Piece2 represents the developmental growth after the transition to middle school (from 0 to 1).