Better child health is widely thought to improve school performance, and th
erefore post-school productivity. But most of the literature ignores that c
hild health as well as child schooling reflects behavioral choices. There f
ore the estimated impact of child health on child schooling in these studie
s may be biased, perhaps substantially. This study employs longitudinal dat
a to investigate the impact of child health (as indicated by nutritional st
atus) on school enrollments in rural Pakistan using an explicit dynamic mod
el for the preferred estimates, These estimates use price shocks when child
ren were of preschool age to control for behavior determining the child hea
lth stock measure. They indicate that child health (nutrition) is three tim
es as important for enrollment than suggested by "naive estimates" that ass
ume that child health is predetermined rather than determined by household
choices in the presence of unobserved factors such as preferences and healt
h endowments. These results, therefore, reinforce strongly the importance o
f using estimation methods that are consistent with the economic theory of
households to explore the impact of some choice variables on others using s
ocioeconomic behavioral data.