“…By contrast, many other studies have revealed that school characteristics make a significant difference in student achievement (e.g., Fuller & Clarke, 1994;Greenwald, Hedges & Laine, 2006;Lee, 2000;Willms & Somers, 2001). In particular, the importance of school structure variables, such as location and sector (e.g., Lubienski, 2006; Organisation for Economic Co-operation and Development [OECD], 2010a), school composition variables, such as school socioeconomic status (SES) (e.g., Caldas & Bankston, 1997;Ewijk & Sleegers, 2010;Ho & Willms, 1996;Konstantopoulos, 2006;Lee & Bryk, 1989), school environment (e.g., Ma & Klinger, 2000;OECD, 2010b), and school resources (e.g., Rutter & Maughan, 2002), has been demonstrated in previous research. These variables are also likely to relate to student achievement, because PISA 2009 results indicate that the average achievement in reading varies considerably across schools in Albania (OECD, 2010b).…”