This study examines teacher and student talk about tests and test data in a bilingual charter elementary school over two academic years. Considering tests as conveying information, the analysis proposes categories to distinguish different kinds and uses of test information. Kinds of test information include that conveyed by the existence of the test, the content of the test, and the results from the test. Types of use include deciding what material to cover or re-teach, assigning students to levels and groups, and offering evidence to various audiences. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]