We will share the research trajectory of a program developed to support multilingual learners to demonstrate their evolving learning in science and spend time looking at examples of the assessments we developed. Participants will discuss the design principles involved in accessible assessments and how to leverage them to develop more robust academic language over time. Participants will leave with 3D assessments and grading rubrics ready for their middle school classrooms, as well as research-based strategies for adapting their existing assessments for struggling readers and English Learners.