The study to be reported here was undertaken during the 1957-1958 academic year at Sparks High School, Sparks, Nevada, and had as its aim the identification of variables which would predict success or failure in first year algebra. At the start of the school year there were a number of educational measurements made for each ninth grade student. Three of the measurements were scores on standardized tests: (a) The Otis Quick Scoring Mental Ability Test, Gamma test, Form Am (lo), (b) The Gates Reading Survey, Comprehension section (3), and (c) The Orleans Algebra Prognosis Test (9). The fourth was the final grades earned in eighth year arithmetic. 83 of 120 students electing to enroll in one of four classes in beginning algebra formed the sample. 37 were not included because they were transfer students for whom eighth grade data were not available, or because they were upperclassmen enrolled in a ninth grade course. At the close of the year final grades in algebra for the 83 students were correlated with the four educational measurements described above. While variables other than the ones selected might have been compared with algebra success, it seemed, on the surface at least, that an aptitude as abstract as that of learning algebra would be influenced by components such as general intelligence, reading comprehension, and numerical ability. An instrument like the Orleans test which purports to measure algebra aptitude would, of course, have a direct applicability. In order to compute Pearson product-moment correlations between final teachers' grades denoting achievement in first year algebra and each of the four educational measurements, it was necessary to convert the eighth year arithmetic grades and the final algebra grades into a common numerical scale. The Sparks schools employ a marking system in which the letter symbols A, B, C, D, and F are used. To give a better description to different levels of achievement the marking system also allows for minus marks for each grade except that of F. Thus grades from highest to lowest run A, A-, B, B-, and so on. In all, nine levels of achievement may be indicated by teachers' marks. In converting this marking system to a numerical scale A was given a weight of 40, A- a weight of 35, B a weight of 30, and so on down to grade F which had a weight of zero. The grade C would have a weight of 20. The results are presented in Table 1. Examination of the table reveals that the correlations between reading comprehension and algebra grades, and Otis intelligence and algebra grades were too low to have statistical significance.