This report examines the disparity in education expenditures in elementary and secondary schools for each state for the period from 1979-80 to 1993-94. Data from the Census Bureau's Survey of Local Governments were used, and the object of analysis was instructional expenditures per pupil. School districts were grouped into four categories: (1) unified districts; (2) elementary districts; (3) secondary districts; and (4) all districts. The greatest emphasis in the report is given to unified districts. Results show that, for most states, a majority of disparity indices for unified districts indicated declining disparity. Five of the states with increasing disparity were in the Midwest, and the other three were in the West. For each of the states for which the measures fell, the decline in disparity did not necessarily mean the state had a more equitable distribution of education expenditures, since the percentage and distribution of special-needs students may have changed over that period. All the disparity measures indicated declining disparity for three of the regions when examined as a whole, and a majority of measures indicated declining disparity in the other areas. Disparity increased for the nation as a whole, in part because instructional expenditures per pupil increased at different rates in different parts of the country. (RJM)