Kettering MP Philip Hollobone has received an extraordinary written answer:
"To ask the Secretary of State for Children, Schools and Families how many pupils dropped out of school before the age of 16 in (a) Northamptonshire and (b) England in the last 12 months. 
Jim Knight: Information on pupils dropping out of schools is not collected, nor can it be accurately derived from the data currently collected on pupils."
It is quite staggering that the of all the statistics ministers swim in, this one is not available to them. It is surely a key measurement of the effectiveness of their education policy.