The Center for Vietnamese Studies at National Cheng Kung University (Taiwan) designed the official IVPT - Kỳ Thi Năng Lực Tiếng Việt Quốc Tế (International Vietnamese Proficiency Test) for speakers of Vietnamese as a second or foreign language. Those looking into immigration do need a certain level of proficiency and other cultural knowledge to pass the naturalization test on history, law and language to become a Vietnamese citizen.