Mediocrity as a concept in education has frequently been used by modern-day and historical actors to express discontent with the status quo of pedagogy and schooling. Despite its pervasiveness in discourse, however, the concept has largely evaded academic scrutiny, particularly in terms of its historical development in the years leading up to its appearance in the famous United States Government report, "A Nation at Risk." This paper aims to construct a conceptual history of mediocrity in American education through the analysis of newspaper articles from "The New York Times," to explore how the concept developed amidst the rise of neoliberalism and meritocratic discourse in education. This study finds that the concept of mediocrity between 1971 and 1983 had a number of nuanced conceptualisations and played a pivotal role in developing meritocratic discourse on natural talent and ability, as well as neoliberal and marketised narratives in public debates over educational equality, business approaches to education, and performance pay for teachers. These findings allow educational researchers to reflect meaningfully on the ways that language shapes, and is shaped by, historical developments in education, and provides layers of meaning and context to oft-used educational concepts that are crucial for the authentic evaluation of our modern education systems.