To attend high school in Changsha, China, international students typically need to meet certain qualifications. These include a valid passport, proof of age, academic transcripts, and sometimes standardized test scores. The most common qualifications are:

1. Valid Passport: All international students must have a valid passport with at least six months of validity beyond the intended duration of their stay in China.

2. Proof of Age: A birth certificate or any official document that proves the student's age is required.

3. Academic Transcripts: Students must provide official transcripts from their previous educational institutions, which should include grades and course descriptions.

4. Standardized Test Scores: Some schools may require scores from standardized tests such as the SAT, ACT, or IELTS/TOEFL for English proficiency.

The reason for these qualifications is to ensure that international students have the necessary academic background and language skills to succeed in a Chinese high school. According to the China Scholarship Council, the number of international students in Chinese universities has been increasing steadily, with a significant number enrolling in high schools. For instance, in 2020, there were over 100,000 international students studying in China, a 15% increase from the previous year. This growth highlights the importance of having a standardized admission process to maintain academic quality and ensure a positive learning environment for all students.