The Green Ribbon Act of 2026 expands the Department of Education's Green Ribbon Schools Program to help more schools pursue environmental sustainability and environmental education. The program focuses on three main goals: ensuring students are environmentally literate, reducing schools' environmental impacts and emissions, and improving environmental health for students and staff. The legislation creates competitive grants to state education agencies of $250,000 to $1,000,000 each, with at least 40 percent of funds going to under-resourced schools, and awards $10,000 honorariums to schools that meet Green Ribbon standards. The bill also establishes a similar Green Ribbon award program for museums, libraries, and other nonformal learning institutions, and creates a new Office of School Infrastructure and Sustainability within the Education Department. The legislation authorizes $10 million annually for fiscal years 2027 through 2032 to fund these programs and activities.