Claire completed her Bachelor's degree at the University of Paris Nanterre and at the University of Potsdam, where she studied law in a Franco-German integrated degree programme. She was particularly interested in international law, international humanitarian law and European Union law. After her Bachelor's degree, she studied international and European law in depth at the University of Paris Nanterre in her Master's degree.
Willing to broaden her understanding of international issues, Claire then studied International Relations in an interdisciplinary Master's programme at the Catholic University of Eichstätt-Ingolstadt in Germany. She focused in particular on EU foreign policy, CSDP and European migration policy. Claire successfully completed her Master's degree in July 2022.