Interesting story by Claudio Sanchez on NPR today: Claudio Sanchez, Mexican-American Toddlers: Understanding The Achievement Gap.
The paper discussed is Bruce Fuller et al., Differing Cognitive Trajectories of Mexican American Toddlers
The Role of Class, Nativity, and Maternal Practices, Hispanic Journal of Behavioral Sciences, vol. 37, no. 2, pp. 139-69 (May 2015).
Fuller's profile (Berkeley Grad School of Education) led me to organization, PACE (Policy Analysis for California Education), a site that has lots of interesting information about schools and kids.