Do class 2 children at Stella Marys Shantiniketan have one main teacher or a different teacher for each subject?

My son is in class 1. This term two of his subjects were handed to a new teacher partway through, and the school told us almost nothing about it. He's taken it harder than I expected, because until now one person was basically his whole school day. We've been talking about renting on the Dilsukhnagar side next year, so Stella Marys Shantiniketan Global School is on the list for class 2. This is the question I've started asking every school now. In class 2, is there one main class teacher who takes most subjects, or do children already have separate subject teachers? I can see pros and cons either way, I just want to know what to expect for him. Current parents with young kids there, I'd love to hear how it works.