For more than a decade, the world history course taught in the public high schools of Texas has provided the only comprehensive overview of the story of humanity to millions of students, most of whom are of Mexican descent. The Texas Essential Knowledge and Skills curriculum standard for world history has been foundational for textbook selection, teacher training, and high-stakes standardized tests. This investigation focused on an analysis of these standards and discovered significant bias and omissions that minimize or distort the historical and cultural significance of Mexico and Latin America as well as civilizations throughout the Third World.