What signs would be involved here?

rehashing an old question..

A teacher walks up in front of her class and asks the kids to draw a picture. She gives them a few minutes, then walks over to Johnny's desk and asks "what did you draw?" Johnny says "A cow in a pasture." The teacher asks if he could the show the class the drawing Johnny stands up shows the picture but there is nothing on it. The teacher asked Johnny "Where's the grass?" Johnny said "The cow ate it." "Ok then where's the cow?" the teacher asked. "He moved to another pasture" Johnny said. The teacher then asked "why did the cow move?" Johnny says " you expect the cow to stay there if there no grass?" The teacher moves onto the next person but is visibly frustrated.

BQ:What grade would you give Johnny, if you were the teacher?

BQ1: what is Johnny's Sign?

BQ2: what is the teacher's Sign?