Last month, the U.S. Census Bureau released its annual public K-12 school finance report (and accompanying datasets). The data, which are for FY 2009 (there’s always a lag in finance data), show that spending increased roughly two percent from the previous year. This represents much slower growth than usual.
These data are a valuable resource that has rightfully gotten a lot of attention. But there’s a serious problem within them, which, while slightly technical, hasn’t received any attention at all: The vast majority of public charter schools are not included in the data.
To gather its data, the Census Bureau relies on reporting from “government entities." Some charter schools fit this description neatly, such as those operated by governments or government-affiliated bodies, including states, districts, counties, and public universities. But most charter schools are operated by private organizations (mostly non-profits), and finance figures for these schools are not included in the report (the Census classifies them as "private charter schools").
What does this mean? Well, for one thing, it means that the overall spending figures (total dollar amounts) are a bit understated. Charters only account for a relatively small proportion of all public school enrollments (around 5-6 percent); still, given the huge amounts of money we’re dealing with here (the U.S. spends roughly $600 billion a year), we’re talking about quite a bit in absolute terms. Perhaps more important is the potential effect on per-pupil spending figures – the way that education financing is usually expressed.