Whose nanny car?

"Are you having an event or do all the children here come to school on Saturday?" 

"I am as confused as you are." she answered. She was aware that the school taught math and languages on the weekend but it was not for all grades. It was for the seniors, not the juniors. This crowd of students was a mixture of both.

Someone must have informed the teachers that the director had arrived because the crowd of children outside started clearing up, as the teachers sent then to their classes. 

When they cleared away, Alix finally saw what had possibly caused the commotion. There was a nanny car parked in front of the main building. One of those black luxury vans with tinted windows to hide the celebrity from public gawking. 

"Whose nanny car is that?" she asked out loud. 

"Are you expecting anyone?" Caishen asked her.