The salient findings are presented Irom two] Studies to determine tinprevalence and charaeteristivs of individual learning disahilitii >o existing in I if), second grade classes in eight Rocky Mountain States, Approximately 15 percent of the more than JlltIO children in the sample revealed some specific learning disorder winclt was frequently associated with sequencing difficulties. Three levels of diagnosis were employed; the informed judgment of teachers, using a new Classroom Screening Instrument described here, was related to the findings of psycho-educational and medical diagnosticians. An Individualized Instructional System which is being developed for the remediation and/or prevention of learning disorders i\ outlined. ‘An variier, lev. complete, vertlon oi this paper was presented ai a section meeting oj tin Minimi foi Children with Communication Ofterden for the 47th A rimii;l International Convention of ihr Council lor Kxiepltonal Children held in Denver, Colorado, I'MV,