That's because the moms went to work in the late '70s and early '80s, deserting the schools and taking away the volunteer strength. I had kids in 1970 and 1975 and was a school volunteer during the height and then the end of school volunteering. Our school of 275 had 68 mom and dad volunteers doing tutoring, paper grading, lunch and playground monitoring, classroom tutors and mods, art and music volunteer programs, you name it.