School counseling classroom lessons provide all K-12 students with Tier 1 preventive supports. Educators use classroom management strategies to best deliver classroom lesson content to K-12 students, although the existing literature for school counselors in particular is sparse (e.g., Goodman-Scott, 2019; Runyan et al., 2019). We describe the creation and validation of the first known assessment on school counseling classroom management: the School Counseling Classroom Management Inventory, resulting in a five-factor model. Our discussion includes strategies for school counselors at the preservice, practicing, district, and counselor education levels to best use this inventory to serve students in K-12 schools.