Zebedee you are right to suspect that SP is/will be teacher-proof. It is my suspicion that eventually there will be TAs paid much less than teachers doing most of the 'teaching', as has already been admitted in Mrz's link a few posts back. Pleased to know that your own perfect school doesn't use TAs in place of teachers, though I don't see why they wouldn't since the reception teacher doesn't actually know how to teach... What's the difference between a teacher with no experience and inadequate training and a TA after all? Answer = salary. Since there will now be a reading test administered at age 6, I can foresee a lot of teaching of the middle by TAs, while the teacher focuses on the high achievers (to bring up the average) and the low achievers (to prevent the average from being dragged down). But then I am a bit of a cynic.
'How do you account for the discrepancy between teaching policy and training policy?' Bonsoir, with the micromanagement of teachers that in envisioned by the paper Mrz linked to there will in the future be no need really for teacher training colleges unless they are all turned into academies training recruits in the SP method. The professional development and mentoring of teachers, management, supervision, accountability, etc., will all take place at school level.
MaizieD please read my last link, and you are welcome to investigate the many studies cited in the references section. Here it is again the Wyse and Goswami paper.
If you are suggesting that SP has a success rate of 90-95% you will have to show proof (rigorous, RCT, quantitative, etc...).
The reason why different methods are chosen for teaching reading is politics, pure and simple. Politics in departments of education, politics in universities, politics at election campaigns with politicians preying on the anxieties of voting parents of young children. Politicians don't actually care about education imo; they are more concerned with votes. But sadly, they are the ones with the power. It has been said that the British Education Secretary has powers that are the envy of totalitarian regimes the world over. The concentration of power in the minister's hands came about under the Major administration, when managerialism held sway as a political ideal. But from 1948 the assumption that 'the men in Whitehall' knew more about what was good for children than anyone else was the guiding mantra.
Why there has been a consistent failure rate with whatever methods were used (hardly any of which can be described or quantified as it seems there were actually as many methods as there were teachers), bearing in mind that until the 60s phonics was king, is anyone's guess.