This study uses interview and survey methods to describe the International Baccalaureate (IB) Diploma Programme's (DP) development of students' "academic civic mindedness" and "model citizenship" at four public schools in California. Results indicate that the DP pedagogy enables students to develop many of the skills that are necessary for civic advocacy and that the DP places a strong emphasis on students' knowledge of issues related to public policy. The DP develops students' citizenship through promoting their awareness of political and social issues and required active engagement with a local or global issue. Most IB students and teachers feel that the DP develops students' academic civic mindedness and model citizenship to a considerably greater extent than other curricular alternatives. Finally, teachers feel that the strongest limitation to their prioritization of students' citizenship development is their lack of clarity on how to frame the civic implications of what they teach.