An incredibly reliable assessment tool, this scale contains 8 normed tests, each of equal difficulty, that is used to determine a student's grade level equivalency in spelling. The accuracy of these tests is amazing. As a student advances with the Reading Works materials, these tests, one per month, become the bench mark for student improvement. Because they cannot study for these tests, they must make informed decisions about how spelling works. The farther they get in Reading Works, the more they understand about how words work and the more application they can make on these tests.