Police said V Kondaiah came to the college this afternoon to meet the teenager. When she refused to talk to him, he stabbed her with a knife, injuring her.
Police said Kondaiah was behaving like a 'psycho' and harassing the girl for spurning his proposal.
The injured girl was immediately admitted to a nearby hospital.
Her condition was stated to be normal.
However, the accused managed to escape from the scene.
An attempt-to-murder case was registered against Kondaiah.
Special teams were formed to nab the accused.