It is best idea if you can pay off student loan, do it as soon as possible. It will save your money that you will pay as interest. There could be some conditions of student loan clearance.
There could be a restriction for certain time period in the starting of Student Loan that you can not settle your student loan in initial one or two years. All companies do not have this restriction.
Some companies offer cancellation of all remaining installments and interest on clearance.
Some companies have condition to pay some extra charges regardless of remaining installments and ammount being paid.
Some companies also offer partial pay off student loan.
So do not be late and contact your bank quickly.