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British politics has been going through a period of rapid and remarkable change

and that's a headache for the politicians and for us voters, but also for people who teach politics.

Here to explain is one of them, Professor Rosie Campbell of Birkbeck College. We've come to non-such girls school which is a selective state school in

Schim and Surrey where Paul Karabine who was an ex-student of mine is a teacher and I

come here every year to give a short talk to the girls about British politics.

So Paul I'm wondering obviously there's been big changes in British politics.

How is the way you teach politics change in the light of recent events?

Well it has been difficult because if you look at the standard textbooks for A level, they lay

out the parties for the three main parties or the three main parties as were five, six years

ago.

So really we're having to get the girls to go out and look at

those parties independently. Quite often we'll get them to do some work and then

come back and feedback to make up for what's lacking in the in the

textbooks that we've got available.

The textbooks now are just pretty much out of date when it comes to political parties.

There was a model of British politics we used to teach, whether in school like Paul or university like me, the

classic British party system. It was pretty clear our electoral system was intended to produce

two party politics with the largest parties

providing stable administrations with clear electoral mandates.

So what the table is really showing us is that whereas maybe 20 years ago we had very much a two-party system

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