Grades and group administered tests are not infallible, so during the process of screening for potential gifted students, many districts use behavioral checklists that are designed to identify characteristics common in gifted children. Created by Gail Ryser, Ph.D. and Kathleen McConnell, Ph.D, the Scales for Identifying Gifted Students (SIGS) is one instrument parents and teachers can use to rate students in the areas of General Intellectual Ability, Language Arts, Mathematics, Science, Social Studies, Creativity and Leadership. The SIGS are normed based on a large sampling, and the scoring is similar to most standardized scores with 130 or above representing giftedness in that area.