Choosing between Lourdes and early learning centre (ELC by CFAL) for first standard

Hello mangy family. I want to choose between Lourdes and ELC for my kid. While I do believe ELC will give him perspectives, I am afraid it will keep the child cushioned and in the bubble and the child won't be street smart. Do you have any suggestions please. Lourdes is CBSE and ELC is IGCSE (cambridge board)