This article provides a rationale and suggests an approach for investigating the school activism of Mexican Americans, Puerto Ricans, and Cubans in the history of education. This more inclusive and comparative approach to Latino activism deepens the understanding of their complex struggles for equality and pluralism in American education. It shows how different groups of Latinos engaged in multiple but parallel struggles for increased learning across space and time and achieved different results. Their efforts expanded, extended, and diversified the historic struggle for education waged primarily by ethnic Mexican activists in the first half of the 20th century. (Contains 20 footnotes.)