Kyunggi High School has educated many leaders of the South Korean society.

It is the "K" in the so-called "K-S mark," an informal reference to educational credentials said to ensure career success, with the "S" standing for Seoul National University.

Famous alumni may be found in all sectors of society and include many past and present politicians (as well as four prime ministers), high-ranking government officials, award-winning scientists and scholars, business executives and national athletes.

The school was established by an edict of Emperor Gojong on April 4, 1899, and opened its doors on November 10, 1900.

In 2000, the South Korean government issued a commemorative 170-won stamp, marking the school's 100th anniversary.