science seminar

Me: How was your science training seminar?

Son: I nearly fell asleep.

Me: Why?

Son: The teacher put me at the back of the class.

Me: Is it because you are one of the better students ( he obtained the highest

mark in his class after all) and the weaker ones are placed in front?

Son: No. It is because I am so tall but I could hardly see what was going on.

Me: ??