The Test Development Coordinator will support and guide the production of operational, standards-based assessments by participating in test development efforts. These efforts span from initial item authoring to final operational test form construction. The Test Development Coordinator will primarily focus on ensuring that science assessment items support valid interpretations of test scores, adhere to industry best practices, and appropriately elicit observable evidence of targeted cognition as described by curricular standards for both general populations and for students with the most severe cognitive disabilities. Successful applicants will demonstrate deep and thorough expertise with the Next Generation Science Standards and will be familiar with a range of either classroom approaches and/or standardized assessment approaches to collecting evidence of student mastery of curricular standards. ATLAS applies principles of Evidence Centered Design (ECD) to its test design and development processes. Therefore, expertise and the ability to provide thought leadership to other members of the science team with regard to these principles in an assessment context is a plus.