The cost to reduce class size ratios to 25:1 for one grade level across the district is $325,000. This is less than the actual cost because the state will contribute funds.
$325K seems like a huge figure, but if we divide it by contributions of $350 (Pleasanton Partnerships in Education's [PPIE's] suggested giving amount per elementary child), that equals 929 contributions. Divided among the 9 Pleasanton elementary schools, that's ~100 contributions per school, or the equivalent of all parents in the 3-4 1st grade classes at each school site.
Note: Educational foundations in other communities have a much higher participation rate than in Pleasanton, and many request amounts greater than $350. For comparison, here are some of the suggested contributions per student: Livermore ($365), San Ramon ($350), Walnut Creek ($300), Moraga ($750), Lafayette ($800), Palo Alto ($800), Los Altos ($1000), and Mountain View ($500).