A self-report Intervention Strategies Scale was developed in order to assess teachers' use of positive and restrictive discipline strategies with students who display hyperactive and aggressive behavior in the classroom. Pilot work produced a 26-item instrument using a 5-point Likert scale. An orthogonal varimax rotation was performed using ratings completed by 289 teachers from 21 urban elementary schools. The factor analysis extracted three factors, not two, which were labeled rewards, negative consequences, and severe consequences. The Intervention Strategies Scale is offered here as a new assessment tool that may be useful for inclusion in future classroom management studies, validation experiments, or item refinement projects. An appendix contains the scale. (Contains 2 tables and 11 references.) (Author/SLD)