The Mc Call-Crabbs reading tests also became important in the development
and validation of the readability formulas. Later reading tests also used for
creating and testing formulas for adults and children include the GatesMacGinitie
Reading Tests, the Stanford Diagnostic Reading Test, the California
Reading Achievement Test, the Nelson-Denny Reading Test, the Diagnostic
Assessment of Reading with Trial Teaching Strategies and the National
Assessment of Educational Progress (NAEP).