The REAL Mathematics Practical Measurement Toolkit is a collaborative, research-informed resource designed to help teachers strengthen Culturally Responsive-Sustaining Education (CRSE) practices in mathematics classrooms. Built around five Essential Characteristics of CRSE—affirming racial and cultural identities, cultivating agency and belonging, building critical consciousness, centering different perspectives, and centering student learning and academic success—this toolkit offers practical, descriptive tools that guide reflection, dialogue, and incremental improvement. Ideal for use in professional learning communities, it fosters shared understanding and meaningful application of CRSE principles, while also supporting individual educators who may not have access to a teacher community. By focusing first on student learning alongside one additional CRSE characteristic, teachers can intentionally address both the academic and social dimensions of mathematics learning, creating more impactful experiences for all students.