The full form of HSLC is High School Leaving Certificate.

A school leaving qualification is an academic qualification awarded for the completion of high school. Depending on the country or region, it may alternatively be known as a high school diploma, senior secondary leaving certificate, high school general certificate or school certificate (amongst other names).

Institutional requirements differ for obtaining a high school diploma or its equivalent. For example, some schools require that all students study a foreign language, and others do not. The number of years that students are required to attend school before earning a high school diploma, the difficulty level of the classes, and the types of classes vary significantly from place to place.