Despite its ubiquity, social work educators are just beginning to harness social media in teaching. In this teaching note, we discuss our use of Twitter in a bachelor's-level macro Human Behavior in the Social Environment course. We present results from a survey of 45 students designed to assess their perceptions of Twitter use in the classroom and, in particular, as a macro social work learning tool. Students appreciated using social media in the course and reported that Twitter was a valuable professional social work tool. We explore how social work educators can provide an innovative classroom experience that incorporates ethical and professional use of social media and demonstrate how we used Twitter to apply macro practice competencies.