university costs

Is university good value for money because I pay £3145 a year and only have 9 hours per week for lectures and seminars? The summer break is also very long. Some courses have 25 hours per week and for the same price. There is a large opportunity cost for going to university because students have to give up their time which could be used to make money from having a job. But statistics show that on average graduates make a lot more money over their lives than people without degrees.