Соответствующая норма
Djibouti
Practice Relating to Rule 7. The Principle of Distinction between Civilian Objects and Military Objectives
Section D. Attacks against places of civilian concentration, including schools
In 2010, in the History and Geography Textbook for 8th Grade, Djibouti’s Ministry of National Education and Higher Education, under the heading “Basic rules of IHL” and in a section on “Distinction”, stated: “It is prohibited to attack … schools”. 
Djibouti, Ministry of National Education and Higher Education, History and Geography Textbook for 8th Grade, 2010, p. 194.
For more than 150 years, the international community has been in agreement that warfare should be made less inhumane, through the rules and principles of international humanitarian law. Civilians should be protected in armed conflict. … However, these rules and principles are challenged and sometimes even ignored. … This is for instance the case in Syria (and Iraq) where … schools are being made the actual targets of warfare. This must stop. 
Finland, Statement by the Minister for Foreign Affairs of Sweden before the UN Security Council during a debate on the protection of civilians in armed conflict made on behalf of Denmark, Finland, Iceland, Norway and Sweden, 30 January 2015.