By the numbers - Teacher assessment
Pupils' achievements in writing at the end of primary school are now assessed by their teachers rather than through an externally marked exam paper.
Government-commissioned research has revealed how well the system is working, with more than eight out of 10 teachers judged by moderators to be marking pupils' work correctly.
In 2012, teachers' judgements in 15 per cent of schools were subject to external moderation to ensure that marks were correct and consistent in different areas. An evaluation carried out by NatCen Social Research for the Department for Education found that most people employed as moderators were current primary school teachers and that headteachers were confident that pupils were being judged accurately.