ABSTRACT Classroom management in special education concerns more than maintaining order and controlling student behavior. It also includes teachers’ capacity to adapt instruction, establish emotionally safe relationships, maximize learning time, and provide accessible support for diverse learners. This study aims to analyze the role of teachers as classroom managers in supporting the academic achievement of students at SLB Negeri 1 Makassar. A quantitative approach is proposed using a nonequivalent control group pretest-posttest quasi-experimental design. The intervention consists of explicit visual routines, accessible classroom organization, adaptive instruction, positive reinforcement, increased opportunities to respond, efficient time management, and teacher–student relationship support. The experimental group will receive the structured classroom management package, whereas the comparison group will continue with usual classroom practices. Teachers’ classroom management performance will be assessed through an observation instrument adapted from the three InClass dimensions: adaptive teaching, relationship support, and behavior management. Academic achievement will be measured using a curriculum-aligned test whose administration and response formats are adapted to students’ accessibility needs without changing the intended construct. The primary analysis will employ analysis of covariance, with posttest achievement as the dependent variable and pretest achievement as a covariate, accompanied by effect sizes and confidence intervals. The study is expected to strengthen evidence regarding classroom management in special-school settings and offer a measurable model combining behavioral, instructional, and relational practices. To demonstrate the planned analysis, the results section uses a simulated dataset of 30 participants. These figures are not field findings and must be replaced before submission. Keywords: teacher role, classroom management, academic achievement, special education school.