“…At the individual level, students often showed higher achievement if they had higher past achievement, were native born, spoke the national language at home, had higher SES families or had schoolmates with higher SES families, all consistent with past studies (e.g., Bradley & Corwyn, 2002;Collier, 1995;Fuligni, 1997;Pong, 1998). Students also typically showed higher achievement if they had greater self-efficacy, self concept, or locus of control (Chapman, 1988(Chapman, , 1997Chemers, Hu, & Garcia, 2001;Guay et al, 2004;Peetsma, Hascher, van der Veen, & Roede 2005;Robbins et al, 2004;Zimmerman, Bandura, & Martinez-Pons, 1992). Overall, girls tended to outperform boys in overall reading comprehension, whereas boys outperformed girls in mathematics and science (e.g., Halpern, 2000).…”