The paper provides a comprehensive update of the profitability of inve
stment in education at a global scale. The rate of return patterns est
ablished in earlier reviews are upheld: namely, that primary education
continues to be the number one investment priority in developing coun
tries; the returns decline by the level of schooling and the country's
per capita income; investment in women's education is in general more
profitable than that for men; returns in the private competitive sect
or of the economy are higher than among those working in the public se
ctor; and that the public financing of higher education is regressive.
The above findings are discussed in the context of controversies in t
he field, concluding that investment in education continues to be a ve
ry attractive investment opportunity in the world today - both from th
e private and the social point of view.