This article examines the effectiveness of a collaborative group learning project for teaching a core competency in comparative politics: constitutional structures. We use a quasi-experimental design and propensity score matching to assess the value of a constitutional writing group project and presentation. The results provide strong evidence that these learning tools are highly valuable for teaching abstract concepts. Students who participated in the project scored significantly higher on a short series of questions in final exams given several weeks after the completion of the group project. Somewhat paradoxically, the project increased competency but did not affect student self-reported interest in the subject matter. The challenges and improvements that can be made for the use these types of learning tools concludes the article.