Noting that four of the six most common readability formulas use the McCall-Crabbs Standard Test Lessons in Reading as the independent criterion of difficulty to establish validity, while the other two often site their correlation with the first four to determine validity, a study examined whether these lessons consisted of passage selections…

Study of 68 school media centers in 11 states was conducted to field-test collection mapping as a technique and to amass enough data to enable individual schools to compare their collections with national pool of school collections. Collections of participating schools were also compared to nationally recognized selection lists. (CDD)