The WJ IV is the perfect assessment for accurately screening, diagnosing, and monitoring progress in reading, writing, and maths achievement areas. The UK and Ireland edition of the WJ IV has been specially designed and adapted from the WJ IV Tests of Achievement,  Form C. While the norms have not changed, all of the content has been anglicised for use in the UK and Ireland and the testing battery has been shortened from 20 tests (standard and extended battery tests available in the full Wj IV) to the 11 core tests (standard battery only) thus making it more economical, affordable, and accessible to those schools and examiners seeking out a reliable and robust assessment tool.