Challenging the normative paradigm that school readiness is a positive and necessary objective for all young children, this book asserts that the concept is a deficit-based practice that fosters the continuation of discriminatory classifications. Tager draws on findings of a qualitative study to reveal how the neoliberal agenda of school reform based on high-stakes testing sorts and labels children as non-ready, affecting their overall schooling careers. Tager reflects critically on the relationship between race and school readiness, showing how the resulting exclusionary measures perpetuate the marginalization of low-income Black children from an early age. Disrupting expected notions of readiness is imperative to ending practices of structural classism and racism in early childhood education.