The current study describes the development and construct validation of a situational judgment test for assessing the strategic knowledge of classroom management in elementary schools. Classroom scenarios and accompanying courses of action were constructed, of which 17 experts confirmed the content validity. A pilot study and a cross-validation with preservice teachers and inservice teachers revealed the assumed factor structure and sensitivity of the test to differences in expertise. The results indicate that the situational judgment test for assessing strategic knowledge of classroom management in elementary schools is a valid assessment tool for investigating the acquisition and promotion of classroom management knowledge during teacher education.