Fernando M. Reimers et al. advanced—placement subjects——that is, college—level courses taught in high school—such as world history, geography, or economics. While the AP curriculum emphasizes breadth of knowledge and the US standards movement lists discrete skills, knowledge, and attitudes that peo— ple wish to impart to students, the World Course curriculum seeks to de— velop a depth of knowledge and the kind of “expert” thinking required to solve problems. In our desire to integrate into the curriculum knowledge, skills, and attitudes—that is, not only to impart knowledge but also to fo— cus on teaching skills and attitudes—that would prepare learners for the twenty—first century, we found that a focus on developing an interdisciplin— ary approach to curricular development was necessary. For example, when we looked at the AP curriculum as a possible framework for our curriculum’s design, we were impressed by the breadth of knowledge required by the program; however, we ultimately felt that we wanted to emphasize depth of knowledge, given the kind of “expert” thinking required to solve problems. We concluded also that the available AP courses were insufficient to teach the foundational knowledge that global citizenship requires; for example, there are no AP courses on public health, demography, technology, or in— novation, all of which, in our View, are indispensable components of an adequate understanding of globalization. In addition, rather than imposing on the students a list of the discrete skills, knowledge, and attitudes that we wished to impart to them, we wanted the students to find and make meaning in their learning. Thus, the World Course curriculum focuses on learning that is integrated and grounded in current social, political, economic, and other concerns and specifically on issues that are complex and without easy answers or solutions. We believed that students would find value in—and would desire to engage with—is— sues that are “real” and authentic; similarly, we believed that in being asked to engage with these real—life issues, the learners would be more motivated to learn the skills and knowledge necessary to understand and solve these issues. For example, the curriculum centers on issues like immigration and lxx