I said that good readers are quite likely to fail
unless they had some training for the test.
More teachers must now be wasting their time on taking their ablest readers who have moved way past the decoding stage back to it by training them to decode nonsense words, because first time round many good readers failed the test by trying to make sense of the nonsense words. It's a perfect example of training for a pointless test.
It's like taking someone who has passed several grades for piano back to playing chopsticks.
I have not administered the test. I no longer teach. This does not prevent me from knowing that phonic decoding is only a very small, initial part of learning to read English, because of its many phonic inconsistencies (man - mAny, end - English, dOEs - shOEs) which cannot be tackled with the kind of basic decoding which the nonsense words test.
It will take a while, but i can predict with 100% certainty that the test will not help to reduce the number of children who leave primary school will poor reading skills (which is the UK's main educational problem).
It's not for lack of basic decoding skills that many pupils fail to learn to read well. They have trouble coping with the many different pronunciations for identical letters or really stupid spellings, like kEY, QUAY, thrOUGH.