Upvote:-2
You cannot, for two main reasons:
Your visa is no longer valid for the purpose of your trip.
Schengen visas needs to be valid for the entire duration of your stay in the Schengen area. This means that not only does the visa need to be valid for when you are entering the Schengen zone, but it has to be valid throughout your intended period of stay.
For example, your visa is expiring on July 14th; if you were to enter the Schengen zone (of course, as a student) on July 13th, you can only stay for one day.
So it is best to leave early (so you don't overstay) and apply for a tourist visa (if you need one).