This is rather the point of student loans though

Hugh Muir gets all upset about what is happening over student loans. The repayment numbers are sinking through the floor so what's the point of the new system. And furthermore:

There is simple economics here; too many graduates chasing too few jobs in a labour market slimmed down by government austerity measures. Many who have taken out the loans can't find jobs, so they don't pay; but those who do find employment are paid so little in an over-supplied market that they don't reach the threshold at which they have to pay.

All of which is rather missing that this is part of the point of having people paying directly for their university educations.

We want them to think about whether spending three years of their life and also £27,000 is a good thing for them to be doing, And the more people realise that perhaps it isn't then the happier all should be.

Don't forget that the total cost of the system as a whole hasn't changed very much. All that is different is who is getting the sticker shock. And that's actually what we want to be happening: is a university education a good deal for those who go and get one? It's is now those who are thinking about getting one who face the prices: they can thus work out for themselves whether it's a good idea.

The answer is that sciences at a good place definitely are (assuming you finish) and arts and ologies at bad places almost certainly aren't. And the only way that anyone's ever going to be able to make a decision like this is by seeing the costs which they can compare to the benefits.

Which is, of course, why the system was changed in the first place.