Browsing All Posts published on »February, 2014«

Rightsize this! When simple, ignorant solutions & simulations just don’t cut it

February 7, 2014


Recently, TB Fordham Institute released a report by AIR researcher Michael Hansen on “Rightsizing” the classroom. Hansen based his analysis on data from the state of North Carolina, using distributions of teacher value added scores and class sizes to derive conclusions about how “great” teachers could be given larger classes, thus reducing students exposed to […]

Friday Finance 101: NY State’s Formula for Failure

February 7, 2014


Below is an excerpt from a recent series of policy briefs on NY State school funding Statewide Policy Brief with NYC Supplement: BBaker.NYPolicyBrief_NYC 50 Biggest Funding Gaps Supplement: 50 Biggest Aid Gaps 2013-14_15_FINAL Note: The above briefs received financial support from the New York State Association for Small City School Districts. All opinions are my […]

The Average of Noise is not Signal, It’s Junk! More on NJ SGPs

February 3, 2014


I explained in my previous post that New Jersey’s school aggregate growth percentile measures are as correlated with things they shouldn’t be (average performance level and low income concentrations) as they are with themselves over time.  That is, while they seem relatively stable – correlation around .60 – it would appear that much of that […]