Education Sector has always been an independent think tank that challenges conventional wisdom in education policy. That means we try to follow the data wherever it leads us.
We recently learned that some of the information in Selling Students Short, a policy paper written by our research director, Andrew Gillen, was based on incorrect information. The U.S. Department of Education’s Data Analysis System (DAS) measure for the mean teaching load in 1987-88 appeared to be 3.6. Further analysis, prompted by a reader, now indicates that the mean teaching load is almost certainly lower. However, since the 1987-88 data anchor the trend reported in the paper, the trend cannot be interpreted as reported. Further analysis is warranted.
In the meantime we are withdrawing the paper from our website. We regret the error.