Npa education loan interest deduction 80e

i took education loan in 2008 fr 13.5lac. I have to start my emi from 2010. I couldn’t pay, so my account became npa. I started paying from 2013. I paid 15.3 lac in FY 2014-2015 out of which 10.3 lac interest ( accured from 2008 ) and principal 5.0 lac. I got certificate from bank about the same. Can I claim ( refund by filing income tax returns ) deduction under section 80e for interest paid in FY 2014-2015? Is education loan interest deductible under 80e accrual basis or paid basis to claim in that financial year?