Cheap international school in Busan
There is a multi-cultural school in Munhyeon dong, near Daeyeon.
It is not an international school as all the subjects are taught in Korean and the students must go through intensive Korean classes at first.
It is also free for foreigners and there is about 60 or so students about 70% or more are foriegn born.
Here is the site http://ac-school.net/