Dear Michael Wilshaw
Below is the text that Ofsted produced as part of their instructions to people wanting to become Ofsted inspectors. As you'll see, in line 3 there is a word 'excersise'.
You'll probably know that the Ofsted inspectors sent out into schools monitor teachers and children, and make assessments of how such things as spelling is taught. This is all done in the punitive framework of league tables and forced conversions.
You'll also know that we can't force you to convert to anything even when someone in your department fails to do what your department is set up to enforce.
How much longer do you think this ridiculous mess can last?
(By the way, I am told that on the first showing of this document the word 'assessment' was spelled 'assesment' too, so you can count that in to the mess too, if you like.)
ps I'm much less bothered by this sort of thing that you and Ofsted. I can see exactly what the writer meant here. It was just a typo, I suspect. Maybe one day, you or someone else in authority, will say something very simple: 'we all make mistakes'.