Although these institutes are more expensive than public universities in France, Grandes Écoles typically have much smaller class sizes and student bodies, and many of their programs are taught in English. International internships, study abroad opportunities, and close ties with government and the corporate world are a hallmark of the Grandes Écoles. Many of the top ranked schools in Europe are members of the Conférence des Grandes Écoles (CGE), as are the Sciences Po institutes.