Posted on Sunday 21st Feb 2016
Teachers' unions in England had complained that the timescale would not give schools enough time to prepare.
"It will take time for teachers to understand the detail," said schools minister Nick Gibb in a letter to the National Association of Head Teachers.
Labour said the changes were causing "chaos" in schools.
Since the mid 1990s, the tests, often known as sats, have been taken by primary pupils in England to assess their ability in English and maths.
Until the latest change, this year's deadline for schools to submit assessments by teachers of their pupils' writing tests, would have been four weeks earlier than last year.
Schools were worried the shorter timescale would raise pressure on both staff and pupils as it coincided with higher standards demanded in the tests.
19/01/23Will some teachers receive a 15.9% pay rise?
Education Secretary Gillian Keegan has claimed that "almost every newly experienced teacher and 40% of experienced teachers will actually get pay rises up to 15.9%". But is she right?
25/11/22Oxford University's Ukrainian scholarships to continue
Ukrainian students displaced by the Russian invasion could study at Oxford University as part of a new scheme.
15/11/22New special needs teaching block could be built at Strood high school
Strood Academy wants to open the new site, which would support 25 children on the autism spectrum
24/08/22BTEC and Cambridge Technicals results delay - government releases new statement
Government orders exam boards Pearson and OCR to give regular updates
02/08/22Vocational and training qualifications decline during pandemic By Robbie Meredith
The number of vocational and technical qualifications (VTQs) awarded in Northern Ireland fell by about 20% during the Covid pandemic.