Income tax rebate on education loan query

I have a question on Education loan..

I am paying my education loan(My Father is a Guarranter) for last 2 years. Me and My father both are working (Father in a Govt Office and I am in a Private company). Both of us want to get tax rebate for total interest paid for financial Year 2011-2012. For that, I am planning to submit the loan documents for months April'11-September'11, and want to show that I have paid this period and want the Tax Rebate, on amount paid (interest portion) for this period. The rest Oct'11-Mar'12, will be declared by my father and apply for Tax rebate.

Will it be possible or can we face any problem in this case in future??? Please advice.