How many high school sophomores are in the US?

As of the most recent data, there are approximately 3.5 million high school sophomores in the United States. This number can vary slightly each year due to fluctuations in enrollment and population changes. Typically, sophomores make up about a quarter of the total high school student population. For the most accurate and current figures, it's best to consult recent statistics from the National Center for Education Statistics (NCES).