The American Rescue Plan infused campuses with $122 billion to reopen buildings, address mental health needs and help students who had fallen behind academically. Despite having access to the dollars, school systems throughout the country reported spending less than 15% of the federal funding, known as ESSER III, the most recent installment of Elementary and Secondary School Emergency Relief, during the 2021-22 school year, according to a Washington Post analysis of data collected by Edunomics, an education finance group at Georgetown University.