Professional school counselors (PSCs) are being asked to employ accountability measures to support the merit of their comprehensive, developmental programs. Further, to address the problem of PSC role ambiguity, it has been suggested that PSCs become proactive professional advocates and work to promote greater stakeholder engagement in their school counseling programs. The utilization of a large group guidance portfolio may address these issues. This article (a) reviews the need for PSC accountability measures and stakeholder engagement, (b) presents a case illustration of a PSC using a large group guidance portfolio, and (c) offers implications for PSCs.