The study reviewed application of the Myklebust Learning Quotient Method of identifying learning disabilities (LD) in the Macomb (Illinois) community school district from 1980 to 1987. The learning quotient (LQ) is a ratio of actual achievement to expected achievement. The Macomb program established ability estimates by use of the Wechsler Intelligence Scale for Children (Revised) and the Kuhlmann-Anderson Test; and achievement estimates with the Science Research Associates (SRA) achievement series and the Peabody Individual Achievement Test. Use of a correction factor for grade level with an LQ of 83 as the cutoff resulted in qualification as LD of 4% of the population. Use of the discrepancy formula was recommended as the first step in LD identification with more specific individual evaluation following. The review of current practices found that 6-9% of students continued to be classified as LD. Problems identified included placement in an LD class without the screening procedure, use of the screening procedure as the entire basis for LD diagnosis, placement without further evaluation, and LD placement regardless of the results of the screening procedure. It was concluded that, though the screening procedure itself was not failing its original purpose, implementation procedures need to be modified. (DB)