The two sources disagree on the point regarding the effectiveness and feasibility of recycling programs in schools, particularly related to participation.
Source 1 emphasizes the necessity of school districts’ participation for recycling to have a positive impact on the environment.
Source 2, however, suggests that getting all students to follow a specific recycling program is not easy and may result in programs being ineffective.
Therefore, the fact on which the two sources disagree is:
There are too many people in a school district to follow one plan.