The Alaska Science Assessment is administered annually statewide to students in grades 5, 8 and 10 and is a summative assessment designed to measure a student's knowledge of the "K-12 Science Standards for Alaska," which were adopted in June 2019. Summative assessments are designed to provide a snapshot of student, school, or program progress and achievement at the end of a period of instruction, and the results are used to provide information about the overall status of a student's learning on the state's standards in science. The "K-12 Science Standards for Alaska" provide a foundation for defining what students should know and be able to do in terms of scientific knowledge and skills. The Alaska Academic Standards in English language arts (ELA), mathematics, and science are used to drive curriculum, instruction, and assessment goals and actions. For any assessment to reliably and validly measure student performance on the academic content and skills outlined in the academic standards, both curriculum and instruction must also be aligned to those common expectations. Further, classroom instruction must be responsive to the assessment data, with regular opportunities for adjustment to resources and strategies to address the academic standards. This educator guide provides an overview of the Alaska Science Assessment, including the test design and score interpretation. Appendices provide sample reports.