Secret of a Success or failure

Behind every successful student,
there is one Girlfriend

But what about a failed student?

.

.

.

.

A Beautiful Teacher ;)

and / or

A dirty Principal :-(

What's STUDY ?

S=Sitting
T=Talking
U=Unlimited
D=Dreaming
Y=Yawning,

So STUDY well (do n't waste your time).
Oh God I have to STUDY more!