School Kids

They need to study, but they want to be happy.
When they need to feel, they will only see.
They want to see, but they do not want to feel.
They want to listen to, but they only look into.
Knowledge is over here but they can only hear.
They need to learn, but they don't simply listen.
They only need to say 'hi', but they are too shy.
They just walk by and finally say 'bye'.