Education may be the most frequently used variable in social science r
esearch and is among the best predictors across a wide range of models
. Despite its importance, education is usually taken for granted. Typi
cally little attention is devoted to its conceptualization, operationa
lization, or measurement. This article considers (a) what aspects of e
ducation typically are and should be ascertained, (b) how reliably and
accurately education is usually measured, and (c) special complicatio
ns associated with measuring education across time. Data from NORC's G
eneral Social Surveys are used to illustrate measurement issues and sh
ow the impact of alternative approaches. (C) 1995 Academic Press, Inc.