Ok, it loses something in the translation and it's somewhat awkawrd, but I wanted to maintain the line breaks.
he says no with his head
but he says yes with his heart
he says yes to who he loves
but no to the professor
he stands upfront
he's questioned
and he's asked all the problems
and suddenly he laughs crazily
he eraces everything
the numbers, the letters,
the dates, and the names,
the sentences and the problems,
and despite the threats of the teacher
and in the face of boos from the child prodigees
with chalk of every colour
on the blackboard black with sadness
he draws the face of happiness
I'd love to change the world, but I don't know what to do, so I leave it up to you...