The consistently helpful Nathan Yau at FlowingData posted a brief tutorial this week on how to make heatmaps quickly. I had a play given that the UK government launched the surprisingly useful and well thought-out recently!

Here’s what I came up with:

Proportion of students gaining 5 or more  A*-C GCSE grades in England, 2006-9

(yes, I too was surprised that the North East leads the way in number of students gaining 5 or more A*-Cs!) :-p