Phil's milk carton alternates between a red "Meadow Gold" carton and a brown "Pet" carton several times.
The boy playing "Phil" clearly got a haircut between the two shots of him entering the boys' restroom. In the latter shot his hair is in an extremely short crew cut, which makes it a bit funny when Phil worries about his hair being "a little messy."
When "Phil" approaches the lunch line, the other children are standing between him and us in the wide shot. But in the close-up, the line is suddenly on the other side of him.