Lending money to an Islamic School on interest
Q: Zaid is willing to lend a Islamic School 50 thousand pounds for a year, on the condition that at the end of the year he gets his full money back, on top of that the School will have to pay him 400 pounds every month,so in total at the end of the year the School will be paying him 54 thousand and 800 pounds,(4 thousand 800 pounds extra) according to Shariah is this permissible,If not permissible could you please explain a Sharee method where the School may borrow money of Zaid and he may also benefit?