This study examines the extent of assortative mating for education in
Northern Sudan and urban Khartoum. More males than females were found
at higher levels of education. Increasingly, people tend to marry pers
ons of equal educational level, but the unequal educational opportunit
ies for males and females have led to the emergence of educational exo
gamy in which members of different educational levels are more likely
to marry from the adjacent educational category than from distant cate
gories. The increasing level of education for both sexes, and especial
ly for females, may in part explain the rising trend in age at marriag
e.