The fundraising volunteers to help as go to school of children who have lost their parents disaster or illness, suicide and the like.
他の英訳もあると思いますが、とりあえずこれでお願いします( ´ ▽ ` )ノ
I got involved in a volunteer activity to raise funds to help enable the children to go to school. The children are those who lost their parents because of disasters, illness, committing suicide, etc.