Last week I asked the following question about the spike in volunteerism: [

D]escribing the growth of teenage participation in these kind of activities as "volunteerism" stretches the meaning of the word a bit, since "service-learning programs" are often mandated at the high school level (that said, the growth of volunteerism at the high school level might also be a function of market pressures -- you want to get into a good college,you need to demonstrate volunteerism).

One question I'm curious about: these service programs have been in place for quite some time now. Does anyone know if hard data exists showing that participation in them triggers a life-long pattern of volunteerism?

Mike Planty, Robert Bozick and Michael Regnier, "Helping Because You Have To or Helping Because You Want To? Sustaining Participation in Service Work From Adolescence Through Young Adulthood." Youth & Society, Vol. 38, No. 2, 177-202:

This article examines whether the motive behind community service performed during high school—either voluntary or required—influences engagement in volunteer work during the young adult years. Using a sample of students from the National Education Longitudinal Study of 1988 (N= 9,966), service work in high school is linked with community service in young adulthood. The findings show that participation in community service declines substantially in the 2 years following high school graduation but then rebounds slightly once members of the sample reach their mid-20s. In general, community service participation in high school was related to volunteer work both 2 and 8 years after high school graduation. However, those who were required to participate in community service while in high school were only able to sustain involvement 8 years after graduation if they reported that their participation was voluntary. Strengths and limitations of the analysis as well as implications for youth policy are discussed.