Koidu Secondary School is a government-sponsored secondary school located in Koidu Town, in the Kono District Sierra Leone. The school is the largest and most prominent secondary school in Kono District and one of the largest in the country. Some of Sierra Leone's most gifted students have come from the Koidu Secondary School. The school has a history of producing some of Sierra Leone's most prominent people, including current Sierra Leone's vice president, Samuel Sam-Sumana.