The two sources disagree on the effectiveness and feasibility of recycling programs in schools. Source 1 emphasizes the necessity of participation from school districts for recycling to have a positive environmental impact, implying that this participation is crucial for success. In contrast, Source 2 highlights the challenges and potential ineffectiveness of getting all students to follow a recycling program, suggesting that the size and complexity of school districts might hinder the success of such programs.
Therefore, the fact they disagree on is:
"Successful recycling programs require the participation of many people."