Staiger, Daniel McCaffrey and Trey Miller confirmed that the measures of effective teaching assessed within the MET project successfully identified teachers who produced on average higher gains in student achievement, with the differences being roughly as large as what would have been predicted based on their effectiveness as measured in 2009-10. The implications of the findings of the MET project for the design of teacher evaluation systems are summarized in Kane's 2015 book Designing Teacher Evaluation Systems (with Kerri Kerr and Robert Pianta as co-authors). Research on the returns to and financing of postsecondary education A fourth area of Kane's research regards the returns to and financing of postsecondary education. For example, he and Cecilia Rouse find that the labour market returns to 2- and 4-year college credits are similarly large - ca. 5% per year of college - and not due to signalling., and that U.S. community colleges have played a key role in providing access to higher education to older, part-time or less well-prepared students, substantially raising aggregate educational attainment and even non-graduates' earnings, even for non-graduates. Furthermore, together with Staiger, they also draw attention to misestimations in OLS and IV estimates in the returns to schooling due to systematic misreporting of educational attainment by survey respondents if such attainment doesn't correspond to a degree. With respect to the financing of postsecondary education, Kane finds that especially low-income youth are very sensitive to the price of college education, but also that means-tested grant programmes haven't been more effective in increasing the college enrollment of that target group than general tuition subsidies. Relatedly, in his evaluation of the Cal Grant (a means-tested financial aid for college), Kane finds that grant eligibility increases the college enrollment of financial aid applicants by 3-4 percentage points, especially for private Californian 4-year colleges. Similarly, in his evaluation of the impact of the D.C. Tuition Assistance Program, which has subsidized the tuition of D.C. residents attending public higher education institutions in nearby states since 2000, Kane finds that the programme has increased the number of Pell grant recipients and college freshmen from D.C. by at least 15%, especially within the Afro-American community. Many of these themes are taken up by Kane's 2010 book The Price of Admission, wherein he criticizes the growing dependence of college enrollment on family income and the sometimes perverse interactions of state and federal policies for financial aid, and suggests