Testing the assumption that textbooks were getting harder while students' abilities have been declining over the years, a study was conducted to determine the readability levels of six college reading textbooks across three editions to see if they were equal or the same in readability. The study also sought to determine whether these texts were generally written at the same levels of difficulty. The Fry Readability Graph was used to evaluate the textbooks. The results showed that the readability levels of the individual editions varied up to six grade levels. It was further shown that over a span of three editions there was little consistency in readability levels between editions, with the later editions being generally more difficult. (Author/RL)