It is worth noting that an estimated two-thirds of Lebanese students attend private schools. In April 2015, the Minister of Education, Elias Bou Saab, acknowledged the myriad challenges and gaps that exist in the Lebanese school system, and the public schools, particularly. While the Lebanese law stipulates that the national curriculum should be updated every four years, it has not been updated since 2000. Plus, because of the national disagreement over Lebanon's modern history, history textbooks cover historical events before 1943 only.