“…This finding is in line with other research which found that the differences between boys and girls in the early years in mathematics performance are not significant (Klein, Adi-anales de psicología, 2014, vol. 30, nº 3 (octubre) Japha & Hakak-Benizri, 2010;Lachance & Mazzoco, 2006;Navarro et al, 2009;Navarro, Aguilar, Marchena, Alcalde and García, 2010;Van de Rijt, 1996). In Chile, the data provided by national assessments confirm that after the first cycle of elementary education there are no significant differences in achievement levels in mathematics between boys and girls, contrary to what happens at the end of secondary education, when boys have better performance than girls (MINEDUC, 2007b(MINEDUC, , 2007c.…”