The full name of WES certification is World Education Service (Chinese: Global Education Service), which is one of the international certifications and the most popular one at present. Its main responsibility is to help American universities to certify the transcripts and academic qualifications of international students, and convert the international students' grades into GPA of American Standard 4.0 algorithm, so that the American University Admissions Committee can understand the international students' grades and academic background.
Many American colleges and universities require international students to certify transcripts, that is, all academic achievements that have not been completed in the United States need third-party certification, and the results are provided to American colleges and universities after transformation and evaluation, and transcripts directly provided by schools or individuals are not accepted. Whether certification is required depends mainly on the requirements of schools and programs, especially for students applying for undergraduate transfer, business schools, medical schools or public health colleges, which inevitably need to do performance certification. As for the designation of certification bodies, American universities have also made it clear in official website that their GPA is relatively high and their acceptance is the widest. Therefore, when schools need performance certification, WES (World Education Service) is the most commonly used institution. Official website, the school admission committee, can inquire about the requirements of transcripts.