他们称为Transborder students，你读过后就知道这些学生的身份了

Transborder students have documentation that allows them to cross into the U.S. for school, like a passport, birth certificate or naturalization certificate, but living in Mexico is often more cost-effective and allows them to stay with their families. Students crossing the border during middle and high school often use a U.S. address, sometimes of a friend or family member, to avoid scrutiny from the school district.