Bruce Baker. Associate Professor in the Graduate School of Education at Rutgers and blogger at SchoolFinance101, looks at performance in 4th and 8th grade math of charter schools versus traditional public schools in NJ. In “Searching for Superguy in Jersey” he’s created a statistical model for schools within urban centers and weighted achievement for free and reduced lunch rates, homelessness, rates, and student racial composition. His conclusion is fair and reasonable:
As you can see, there are plenty of charters and traditional public schools above the line, and below the line. The point here is by no means to bash charters. Rather, this is about being realistic about charters and more importantly realistic about the difficulty of truly overcoming the odds. It’s not easy and any respectable charter school leader or teacher and any respectable traditional public school leader or teacher will likely confirm that. It’s not about superguy. It’s about hard work and sustained support; be it for charters or for traditional public schools.
Dr. Baker’s scattergrams place both charters and non-charters at the high end of performance (“Beating the Odds”) and low end (“Underperforming”). He also features Newark-specific scattergrams.