The Oral Language Acquisition Inventory Second Edition (OLAI-2) continues the OLAI tradition of using quick and simple criterion-referenced assessment tasks to evaluate language and learning behaviors in order to drive effective instruction and/or intervention.

Gray Oral Reading Test Fifth Edition (GORT-5) is one of the most widely used measures of oral reading fluency and comprehension in the United States.

OWLS-II offers an integrated, global approach to language assessment with a new Reading Comprehension Scale, updated norms, new items, a parallel form, improved scoring guidelines, and full-color stimulus materials.