Local comprehensive assessment systems (LCAS) are essential for ensuring equitable learning opportunities for all students. They have the potential to ensure that each and every learner meets high expectations that are set across all content areas. The Vermont Agency of Education held convenings with educational leaders to refine tools and investigate resources that can improve local systems of assessments that support personalized, proficiency-based learning. This report describes Vermont's convenings to support schools, districts, and other education organizations seeking to create high-quality local comprehensive systems of assessments. It can serve as a resource for schools, districts, and states that are working toward improving their own assessment systems. Readers will learn about the rationale and essential components, formative and summative performance assessments, and student-designed performance assessments.