The below has just been posted on the BBC website.
'Teachers' predictions for A-levels, AS-levels and GCSEs in England will be based on the evidence available - such as previous exam results, tests, homework, coursework, mock exams and what the regulator calls "general progress during your course".
Teachers will be asked to say what they think would have been the grades most likely to have been achieved if the summer exams had taken place - based on an overall professional judgement.But they will also be asked to put students in order of expected achievement within each predicted grade band.
This will be used to moderate the overall share of grades in schools across the country.This could mean adjusting the grades being predicted by schools if they seem too generous or harsh - and to make the overall distribution of grades consistent with other years.
Schools are being told they are not allowed to tell students the grades submitted to exam boards or how they are ranked.'