The school in question that he attended whilst living in Indonesia between 1967 and 1971 is "Sekolah Dasar Negeri 04 Besuki in Menteng, Jakarta, Indonesia" This is a normal state school which kids of all faiths can attend, however given the religious mix of Indonesia, it would be expected that most of the kids would be muslim, but it certainly is not a religious school, nor are any of the other state schools in Indonesia.
