This paper investigates the causal impact of public school enrolment on child labor. Our main hypothesis is as follows: Is school enrolment a substitute for child labor? Recognizing that schooling and work choices are jointly determined by parents in a utility maximizing framework, the study applies an instrumental variable solution to the problem of simultaneity. This approach entails using the receipt of free textbooks and access to a public primary facility as instruments for public school enrolment. Using data from the Multiple Indicator Cluster Survey for 2007/08, our working sample consists of children between 5 and 14 years of age, which makes up 25 percent of the surveyed population. The results suggest that public school enrolment can be used as a substitute for child labor. On average, a 1 percentage point increase in a household’s enrolment ratio has the potential to reduce the number of hours of paid labor by almost 5 percentage points, ceteris paribus. This substitutability is highest among poor, urban, male children. Moreover, the incidence of child labor is higher among larger poor families.