Precourse to postcourse gains in auditory training for 43 students were correlated to the follow- ing variables: (a) English ability at the onset of the course, (b) puretone average, (c) aided hearing discrimination, (d) hearing discrimination under phones, (e) the difference in hearing discrimi- nation under phones and with hearing aids, (f) improvement in English score during the training period, (g) speechreading with sound, (h) speechreading without sound, (i) auditory training pretest score, and (j) high frequency cutoff for the better ear. It was found that the variable most highly correlated with auditory training gains was the English score at the onset of the auditory training period. Students at the National Technical Insti- tute for the Deaf (NTID) who use their hearing aids all or most of the time and score between 25% and 70% on the Central Institute for the Deaf (CID) Everyday Sentence Test (Davis & Silverman, 1970) are encouraged to enroll in the Intermediate Auditory Training course. In a previous study (Mapes & Moreau, 1980), measurement tools for assessing auditory train- ing gains were reviewed. The measurement tools investigated included: the actual training materials, related but untrained materials (de- coy sentences), and a standardized measure (a modified rhyme test) that was both untrained on and unrelated to the training materials. The results of the study indicated that decoy sen- tences were a good measure of precourse to postcourse gains. The average gain on decoy sentences reported in that study was 33%. The present study was undertaken to determine those variables most related to success in audi- tory training as measured by percent gain on decoy sentences. The variables under investiga- tion were: (a) English ability at the onset of the course, (b) puretone average, (c) aided hearing discrimination, hearing discrimination under phones, (d) the difference in hearing discrimi- nation under phones and with hearing aids, (e) improvement in English score during the train- ing period, (f) speechreading with sound, (g) speechreading without sound, (h) pretest score on decoy sentences, and (i) high frequency cutoff for the better ear. These variables were a compilation of variables thought by the instruc- tors of auditory training to possibly be related to success in the course.