A STATEWIDE PROGRAM WAS INITIATED IN WYOMING FOR THE PURPOSES OF DISCOVERING THE EXTENT OF MENTAL RETARDATION AMONG ELEMENTARY AND SECONDARY STUDENTS IN THE STATE, DETERMINING WHERE THE MENTALLY RETARDED ARE FOUND, AND PLANNING AN EDUCATIONAL PROGRAM FOR THEM. GROUP MENTAL TESTS WERE APPLIED TO 67,620 CHILDREN WHICH REPRESENTED 91.8 PERCENT OF THE PUBLIC SCHOOL ENROLLMENT AND 86.5 PERCENT OF THE NONPUBLIC ENROLLMENT AT THE TIME. AN INDIVIDUAL TEST WAS GIVEN TO 1,383 CHILDREN (73 PERCENT OF THE STUDENTS WHOSE IQ'S FELL BELOW 76 ON THE FIRST TEST) THIS LATTER TEST WAS SUPPLEMENTED BY OTHER AVAILABLE DATA REGARDING EACH CHILD, INCLUDING ACHIEVEMENT TESTS, MEDICAL AND SOCIAL HISTORIES, AND PSYCHIATRIC EXAMINATIONS. ALL INFORMATION WAS INTERPRETED FOR EACH CHILD WITH RESPECT TO DEGREE OF MENTAL RETARDATION AND APPROPRIATENESS OF EDUCATIONAL CLASSIFICATION. THE OVERALL SURVEY NOT ONLY REVEALED INFORMATION FOR WHICH IT WAS INTENDED, BUT IT ALSO ACCOMPLISHED MUCH MORE IN TERMS OF A GENERAL EDUCATIONAL, STATISTICAL PICTURE FOR USE IN FURTHER SCHOOL IMPROVEMENT AND PLANNING IN THE STATE. (JH)