. The relation of the size of the class to school room efficiency. less 15 20 25 30 35 45 55 of XXXVI. Distribution of Maximum Scores accordingSize of mm 42 An examination of Tables XIV and XV shows the followingfacts:- (l) Thore is no decrease in the average scores in any ofthe tests, as the size of the class increases. (2) The maximumscores are distributed throughout the class groups with a slighttendency to cluster in classes with ah enrollment of 31 to 55pupils. (3) There are approximately as many plus deviations asminus deviations in the large, medium, and s
. The relation of the size of the class to school room efficiency. less 15 20 25 30 35 45 55 of XXXVI. Distribution of Maximum Scores accordingSize of mm 42 An examination of Tables XIV and XV shows the followingfacts:- (l) Thore is no decrease in the average scores in any ofthe tests, as the size of the class increases. (2) The maximumscores are distributed throughout the class groups with a slighttendency to cluster in classes with ah enrollment of 31 to 55pupils. (3) There are approximately as many plus deviations asminus deviations in the large, medium, and small class-groups.(4) In Test 5, a test of speed in copying figures, (an abilitywhich the school does not seek to cultivate) we find approximate-ly the same degree of variability in the deviations as in Test 7,(a test of arithmetical abilities which the school does seek em-phatically to cultivate.) If the size of the class were a modify-ing factor its effects should be apparent in the results of Test7 if anywhere. Table XVI shows the results of combining the deviations of each group for all the grades. The combination was made according to the following formula; - Algebraic
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