Absolutely, in fact I would say that it should be considered a borderline essential part of our school curriculum and should be placed alongside the same importance as English, Maths and the Sciences when a pupil reaches Years 10 and 11. I would have jumped at the chance to study it at GCSE and found that my A-Level studies significantly boosted my knowledge of mainstream and fringe politics. I would argue however that my studies still didn't go far enough.
My ideal topics for a 2 year GCSE module would be:
The Government Branches - Basic understanding of the Legislature/Executive/Judiciary
Political Ideologies - 20th Century to Present day and basic comparisons to historical political figures
Voting Behaviour/Trends
Contemporary Issues in British Politics (i.e. The Monarchy, The Recession, Basic EU understanding)
Examinations would be 25% MCQ (i.e. outlining definitions of a royalist/socialist, stating political events such as when a certain person became Prime Minister etc) and 75% essay, split into two shorter essay questions on issues such as change in the political ideology of the Labour/Conservative Party, what the arguments for a republic are and other similarly styled questions.
I do agree with the above post that all teaching would have to be politically neutral. But it is outstanding and quite frankly embarrassing that a significant proportion of high-school students have no knowledge of our political system or it's main figureheads.