“…There is quite a bit of evidence that beliefs play a central role in noticing data (Bickel & Cooley, 1985;David, 1981;Hannaway, 1989;Kennedy, 1982Kennedy, , 1984West & Rhoton, 1994), interpreting data (Bickel & Cooley, 1985;Coburn et al, 2009;Cromey, 2000 Hallett, 2010;Herman & Gribbons, 2001;Ikemoto & Marsh, 2007;Ingram et al, 2004;Kerr Marsh, Ikemoto, & Barney, 2006;Mintrop, 2004;Young & Kim, 2010), and in constructing implications for action (Coburn et al, 2009;Kennedy, 1982;Spillane, in press). For example, teachers often perceive standardized test data or interim assessments as lacking either validity or usefulness for making decisions about student learning or teacher effectiveness.…”