The modern Language Association, under contract with the U.S. Office of Education, has organized and supervised the evaluation of National Defense Language Institutes in the summers of 1963 and 1964 and during the 1963–64 academic year. A total of 45 evaluators (21 in 1963, 28 in 1964, some of them serving in both years) visited 132 institutes (all of the 82 institutes in the summer of 1963, the 4 academic-year institutes in 1963–64, and 46 of the 80 institutes in the summer of 1964).