Exhibit 99.1 American Public Education Reports First Quarter 2024 Financial Results Increasing Full Year 2024 Revenue and Adjusted EBITDA Guidance Driven by Strong First Quarter Performance CHARLES TOWN, W.V. – May 7, 2024 -- American Public Education, Inc. (Nasdaq: APEI), a portfolio of education companies providing online and campus-based postsecondary education and career learning to over 125,000 students through four subsidiary institutions, has reported unaudited financial and operational results for t ...