The two sources disagree on the fact regarding the effectiveness of recycling programs in schools due to participation challenges.
The first source emphasizes the need for participation from school districts for recycling to have an impact on the environment, suggesting that involving many people is necessary and beneficial.
The second source, however, points out that getting all students to follow a specific recycling program is not easy and can lead to ineffectiveness, implying that having many people can complicate the execution of a recycling plan.
Therefore, the correct response is:
There are too many people in a school district to follow one plan.