Save The Children Isle of Man hopes to raise enough money in the New Year to build two schools in Sri Lanka.
It needs to raise £15,000 itself and hopes the government's Overseas Aid Committee will match that figure.
Currently the children in Vavuniya, in the north of the island, are taught in a single room with 3ft high walls and no roof.
Hugh Davidson, vice chairman, said children often had to fight off animals that would interfere with lessons.
He added: "We had a number of criteria - we wanted to work in an island and if possible English would be spoken so we could link it in with local schools."
"We looked at 40 islands - we agreed that Sri Lanka would be the best one.
"We asked Save the Children for projects and this was one they felt was most needed."