Coming top of the contextual value added (CVA) table will give North Liverpool Academy's head another chance to tell her staff and pupils "how wonderful they are".
Kay Askew said their position did "not come as a huge surprise" due to the size of the school's original CVA score of 1091.5.
Overall, 45 per cent of its pupils achieved five good GCSEs including English and maths.
The school (pictured) is in Everton, one of the country's poorest wards; only 53 per cent of its intake reached level 4 in English at key stage 2.
"It doesn't make much of a difference in the wider world, but it does say the world recognises the hard work that my staff and my children have put in.
"I have fabulous children here. Their behaviour is impeccable and we have a very strong community ethos.
"We have had incredible support from our local community partners. We could not have done what we have done without them."