Rialto exemplifies a school district that is proceeding through a series of steps—not always linearly—to promote equitable access to environmental literacy for all K–12 students in the district. This case study documents how a handful of local champions and advocates, with a supportive statewide context and dedicated partners, enabled a district that was once underestimated to enter and win the 2019 Green Ribbon School District Sustainability Award from the U.S. Department of Education.