Deduction u/s 80E is available for Interest paid on loan taken for higher education.
This deduction is available only if educational loan is borrowed from registered financial Institutions in India or registered charitable trusts (for 80G donation purpose).
If above condition is satisfied then deduction is available even if higher education is perceived in foreign country.
There is no maximum limit as to amount of deduction u/s 80E but the limit may be subject to availability of Gross Total Income (GTI) to the extent of interest paid.
This deduction can be claimed from the year in which repayment of interest is started and same can be claimed for next 7 years, subject to payment of Interest. This means that this deduction is not allowed after expiry of eight years.