Background/Context: To adapt to increasingly diverse classrooms, some school districts are trying to offer additional curriculum that represents the diversity of their students. California, where half of school-age children are Latinx, is at the forefront of including Latinx histories in its curriculum. The state's 2017 California History-Social Science Framework claims to prioritize "engaging and relevant" history curriculum. Yet, as this article reveals, curricular inclusion does not always lead to complex representations of Latinx histories. Purpose/Objective/Research Question/Focus of Study: This article focuses on "Mendez v. Westminster School District of Orange County" (1946), a Mexican American school desegregation case, as an example of how Latinx experiences were diluted to appeal to a larger audience, gain traction, and justify their addition to the California framework. Research Design: This article includes analysis of five forms of data: historiography of the case, primary documents regarding the court trial and appeal, primary documents related to "Mendez" becoming part of the California framework, educational resources, and interviews with people who advocated for "Mendez" to be taught in K-12 classrooms. Findings: Although "Mendez" was included in the California History-Social Science Framework, the version that was embraced was more about "Brown v. Board of Education" than "Mendez" or Latinx school segregation. To appeal to a larger audience, the Mendez story had to attach itself to an already celebrated and well-known event. This gave rise to the "Mexican American 'Brown'" interpretation that stretches the historical truth, exaggerating the connection between "Brown" and "Mendez." Educational and curricular resources facilitated this process in three ways: (1) claiming that "Mendez" was the legal precursor to "Brown"; (2) fabricating Earl Warren's participation in "Mendez"; and (3) exaggerating the role that Thurgood Marshall and the NAACP had in "Mendez." Historical actors were then used to corroborate the Mexican American "Brown" story. This article ends with analysis of what is lost when "Mendez" is represented in the California framework as the Mexican American "Brown." Conclusions: "Mendez v. Westminster"'s addition to the California framework signifies that it is an event worth learning. Yet, it is "Mendez"'s relationship to "Brown" that made it worthy. This leads to an "illusion of inclusion," which gives the impression that Mexican Americans are being incorporated into the curriculum but actually fails to represent their unique experiences. Historical events that validate the stories of Latinx communities are still very much missing from curricular materials.