[Miss Didi]

Did a quick search on the school:

Retracing Barack Obama’s footsteps in Indonesia: Stories by his Indonesian schoolteachers

An insight to Barrack Obama’s strong emotional affinity to Indonesia

[Miss Didi]

From my links:

Just like Ceacilia, Mrs Is also admitted that Barry attended Catholic lessons at school. “It was compulsory for every student. However, he also often went to a musalla (Islamic room set aside for prayers) near his house as Barry’s (step)father was a Muslim,” she added (Barry’s house was also located in Hj Ramli Street, where Assisi Primary was).

Barry Soetoro enrolled in that school for only two years. Then, he was transferred by both his parents, Ann Dunham and Lolo Soetoro, to Trial Primary (SD Percobaan), Besuki Street, Menteng (now 1st Menteng Public Primary School, or SDN 1 Menteng). In the public school (1970-1971 until his middle of 5th grade), Barry was registered as a pupil of Muslim religion.

Regarding the religion that Barry adheres to, Anis bin Hajj Asmari, 48, the man who had been mandated by Erna, the wife of Lolo Soetoro after his divorce with Ann Dunham, to sell the house they had occupied in the Inner Menteng vicinity, admitted how well acquainted he is with the Soetoro family.

“Barry always went to the neighbourhood musalla every afternoon. Yep, around 4 to 5 pm. Then he always hurried home after that,” he said.