The University Selection Test (Spanish: Prueba de Selección Universitaria or PSU) is a standardized university admissions examination used in Chile since 2003. It replaced the Prueba de Aptitud Académica (PAA) which had been in use since 1966. The PSU consists of four sections: math, language, science and history.
References
Prueba de Selección Universitaria Wikipedia(Text) CC BY-SA