The tax credits in the IRA, the largest legislative investment in climate projects in U.S. history, had marked a major opportunity for schools and colleges to reduce their impact on the environment. Educational institutions are significant contributors to climate change: K-12 school infrastructure, for example, releases at least 41 million metric tons of emissions per year, according to a paper from the Annenberg Institute at Brown University. The K-12 school system’s buses — some 480,000 — and meals also produce significant emissions and waste. Clean energy projects supported by the IRA were helping schools not only to limit their climate toll but also to save money on energy costs over the long term and improve student health, advocates said.