They came by at my dd's preschool today. They first observed and then they spoke to the 4 children (in a group) outside the classroom, just informally ... about their favorite foods, etc. and then apparently they were told about next week, together with other kids, play and "make" something as my daughter described it. It's hard to tell when a 4 yo tells you a "boy" came to school and talked to them?! But she sounded very positive and good about it, and she's looking forward to next week. I think it's more about social interaction, English, etc. and it's not a drawing / writing, etc. test but they may do some arts & crafts (as I understood from the "making something" part) ...
HTH.