2:1 is a university grade for degree level qualificaion. The system is as follows:1st class degree (probably roughly equal to a 70% grade, but very few of these are given out)2nd class upper degree (AKA 2:1 - roughly equivalent to the 60-70% bracket, and by far the most common grade for grads)2nd class lower degree (AKA 2:2 - 50-60%, generally considered too low to land a decent graduate role)3rd class degree (3rd - forget it, off to the job centre)