The new rankings show how more than 15,000 primary schools performed in national curriculum tests - known as Sats - which are taken by 11-year-olds. Under the Government's tougher standards, for the first time schools are judged on the number of children achieving at least a Level 4 - the standard expected of the age group - in reading and writing as separate subjects, as well as maths.
They must ensure that at least 60% of pupils reach this level in all three subjects and meet national averages in pupil progress to be considered above the floor. In previous years, they were rated on reading and writing combined to form an overall English result and maths, as well as progress.
There differences in performance around the region. In Poole in Dorset, 33% of primaries are considered failing by the Government's benchmarks. Elsewhere education officials have praised Dashwood Banbury Academy in Oxfordshire as an academy exceeding targets.