The screening works by analysing data gleaned from the exam boards' online marking system.

BBC: New weapon in war against exam cheats

But some teachers believe the subjective nature of the marking system in English is at the heart of the problem.

BBC: GCSE English: How is it marked?

For the first time all owners who pay harbour fees on the River Hamble are being issued with forensic property marking system SmartWater.

BBC: Boat owners in Hampshire given anti-theft paint

The Reds' zonal marking system looked all at sea once more and it was no surprise that a failure to pick players up was directly responsible for Unirea's opening goal.

BBC: Unirea 1-3 Liverpool (agg 1-4)

So it was against the run of play when Southend took a shock lead - with Scolari's new zonal marking system exposed at the first opporunity - as Barrett headed in Stanislas's corner unmarked from eight yards.

BBC: Southend 1-4 Chelsea

The 58-year-old England and West Ham great likened the current regulatory system to being "a bit like marking your own exam papers at school".

BBC: Brooking admits to FA frustration

And if there have been attempts to toughen the marking to compensate for too many students getting top grades in the AS and A2 system, he says this should not be at the expense of individual pupils.

BBC: A-level marking 'grossly unjust'