I'd advise getting one during the summer once you have confirmation that you're getting into university. Student accounts normally give you good benefits like 0% interest on your overdraft whilst your at university and also some times other perks! Plus you normally get a overdraft increase every year as well. Santander for example give you a rail card, HSBC gives you an amazon voucher etc and then a credit card as well. So really depends on what your current account is giving you compared to what your student account would give you. In most cases its more beneficial to get a student account.