Horizontal readability, the analysis of essentially similar passages through classification of words and phrases according to their cognitive similarity, is discussed in relation to its usefulness in differentiating among materials designed for the same reading level. Three studies of horizontal readability in which passages were rated for high…

A systematic approach to assure the teacher of readable materials suited to the student's age level. (Editor)

Two readability formulas were applied to two math and two reading series textbooks at the fourth, fifth, and sixth grade levels to see whether the publishers' suggested reading levels were accurate. Five samples were taken from each text and compared to the publishers' suggested usage according to grade level. Results showed that although formulas…