Chief regulator Glenys Stacey says Ofqal has noticed a pattern in appeals of exam results from schools.
The analysis that we have done has shown that there is tactical appealing at critical grade boundaries - C/D at GCSE and B/A at A-level, that doesn't mean that every appeal at that boundary is tactical, but you can see from the pattern that it would suggest there is tactical appealing.
Secondly, the way the appeal system is designed at the moment, and indeed headteachers agree with us, that where you're within a couple of marks of such a grade boundary it's worth appealing because it is a one-way bet.
More top news
The company said its role was not to decide what was or was not compliant with local building regulations.
The Neapolitan mastiff, who weighs over eight stone, beat off other underdogs to win the 29th World's Ugliest Dog Contest.
Three deadly attacks, including a twin explosion in a crowded market place, across Pakistan have left dozens dead and many injured.