Different settings, different patterns of impacts: Effects of a Pre-K math intervention in a mixed-delivery system

•This study assessed variation in Pre-K classroom quality in public schools and community-based organizations.•The study also estimated impacts of a Pre-K math intervention within subgroups of public schools and community-based organizations.•There was less math instruction in community-based organizations compared to public schools.•The intervention increased the amount of time children spent in math in community-based organizations and public school.•The intervention improved children's math skills in public schools and vocabulary and executive functioning in community-based organizations.