The Purdue Teacher Opinionaire (PTO) and the School Survey (SS) were studied to determine their comparative effectiveness in measuring similar aspects of teacher morale. Elementary and secondary school teachers from a Wisconsin middle-class school district completed both instruments. Analysis of the data revealed six significant canonical correlations relating the two scales. Four of these variates proved to be interpretable: supportive relations, pay and benefits, work load, and facilities and equipment. Each variate is discussed and the elements are presented in individual tables. The study indicates that teacher morale can be predicted from a number of factors common to both instruments. (LR)