The ACER Progressive Achievement Tests in Reading Fourth Edition (PAT Reading Fourth Edition) is a major revision of this Australian test of achievement in reading. The PAT Reading Fourth Edition is a researched and normed test for measuring student achievement in reading comprehension, word knowledge and spelling. It is designed to help teachers assess the pre-reading, reading comprehension, vocabulary knowledge and spelling skills of students from the first year of school to Year 10; and it provides teachers with objective information for setting realistic learning goals and planning effective programs. The PAT Reading Fourth Edition contains eleven normed and graded comprehension tests for the first year of school to Year 10; five normed and graded vocabulary tests for Years 3 to 10; and nine normed spelling lists for Years 2 to 10.