RT Journal Article SR Electronic T1 Maternal Labor Supply and the Introduction of Kindergartens into American Public Schools JF Journal of Human Resources JO J Hum Resour FD University of Wisconsin Press SP 140 OP 170 DO 10.3368/jhr.44.1.140 VO 44 IS 1 A1 Cascio, Elizabeth U. YR 2009 UL http://jhr.uwpress.org/content/44/1/140.abstract AB Since the mid-1960s, many state governments have introduced subsidies for school districts that offer kindergarten. This paper uses the staggered timing and age targeting of these grants to examine how the childcare subsidy implicit in public schooling affects maternal labor supply. Using data from five Censuses, I estimate that four of ten single mothers with no younger children entered the work force with public school enrollment of a five-year-old child. No significant labor supply responses are detected among other mothers with eligible children. Results also indicate that at least one in three marginal public school enrollees would have otherwise attended private school.