During the two nuclear attacks on Hiroshima and Nagasaki, many thousands of children were killed. In Hiroshima, where I live, many schools have memorials to the students and teachers that were killed during the nuclear attacks. Some have preserved small sections of the school as they were on the day of the attack.
Here are photos of two schools, one in Hiroshima and one in Nagasaki, taken by the United States Strategic Bombing Survey team in the autumn of 1945.
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Shiroyama National School in Hiroshima:
Shiroyama National School, 500m from the epicenter of the Hiroshima nuclear attack
Shiroyama National School, a large room on the 3rd floor, all 66 people on this floor at the time of the attack were killed.
Shiroyama National School, a schoolroom on the 2nd floor, 6 out of 7 people in this room were killed.
Shiroyama National School, a larger schoolroom on the 2nd floor, 25 of 29 people in this room were killed.
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Chinzei Middle School in Nagasaki, 500m from the epicenter of the Nagasaki nuclear attack
Chinzei Middle School in Nagasaki, 4th floor. All of the students and teachers on this floor were killed.
Chinzei Middle School in Nagasaki, 3rd floor. All of the students and teachers on this floor were killed.
Chinzei Middle School in Nagasaki, a large room on the 2nd floor. All 36 students and teachers in this section of the 2nd floor were killed.
Chinzei Middle School in Nagasaki, a large room on the 1st floor. 11 out of 13 people in this room were killed.