No, he didn't have to be the center of attention with a big "group hug" about him, but there shouldn't be such a gap. This could easily have been fixed by having the teacher on the right side of the photo instead of the left, and having the kids shift down that way.
Of course, that would require moving the camera, and those guys set up once at the beginning and that's the end of it.
But "mama drama" aside, it's a terribly composed picture.

