Grammar for Writing (re-grant)

This page covers the second (effectiveness) trial of Grammar for Writing, testing a scalable model under everyday conditions in a large number of schools. To read about the first (efficacy) trial - testing whether it could work in schools under best possible conditions - click here.

Grammar for Writing (GfW) is a way of teaching writing that is designed to help pupils understand how linguistic structures convey meaning, as an alternative to teaching grammatical rules in the abstract.





Key Stage 2

Key stage

EEF Summary

In 2012, the EEF funded a number of programmes, designed to improve literacy outcomes for pupils at the transition from primary to secondary school. Grammar for Writing was chosen for this because previous evaluations have found that grammar interventions can have a positive impact on writing skills.

The first evaluation found some evidence of promise. Despite its short duration (4 weeks), it had a small positive impact when delivered to the whole class, and a larger impact when delivered to small groups – although this second result may have been due to the small group work rather than the intervention itself.

Following these results, the EEF funded a larger evaluation of a scalable version of GfW. This second evaluation focused solely on the whole-class version of GfW and on Year 6 pupils rather than pupils at the transition. It was also delivered over 6 weeks rather than 4. It found no evidence of an impact on pupils’ writing outcomes.

The difference in results between the two evaluations might be the result of the differences in delivery described above. It might also be partly due to implementation problems during the second trial: while teachers were generally satisfied with the programme, many adapted or left out key components such as using classroom discussions to explore the effects of grammatical choices.

Given uncertainty around the impact in the first evaluation and the lack of impact in the second, the EEF will be removing Grammar for Writing from the list of promising projects. We continue to be interested in grammar-based approaches to writing. 

Research Results

Were the schools in the trial similar to my school?

  • There were 155 schools analysed in the trial, located across the country
  • 146 of the schools were in urban areas
  • 26% of the pupils in participating schools were eligible for FSM
  • 70% of the schools were rated 'Good' by Ofsted

Could I implement this in my school?

  • The training is not currently commercially available
  • Schools can access Grammar for Writing resources through the University of Exeter website here
  • Lessons are delivered by teachers to the whole class


Delivered by


Whole Class

Participant group


1 Year

Intervention length

How much will it cost?

The cost per pupil per year over 3 years is estimated to be approximately £10. This figure assumes approximately 25 pupils per class.



Cost per pupil



No. of Teachers/TAs


4 Days

Training time per staff member

Evaluation info





Key Stage

Key Stage 2

Start date

September 2016

End date

July 2017

Type of trial

Effectiveness Trial

Evaluation Conclusions

  1. The project found no evidence that Grammar for Writing improves writing attainment for children in Year 6, as measured by the bespoke test. 

  2. The project found no evidence that Grammar for Writing improves reading, writing or grammar, punctuation and spelling (GPS) as measured by KS2 SATS. Indeed, it found a small, negative effect size (equivalent to one month less progress) for the GPS outcome. 

  3. Pupils that have ever been eligible for free school meals made a small amount of additional progress compared to similar pupils in control schools. This result is not statistically significant. This means that the statistical evidence does not meet the threshold set by the evaluator to conclude that the true impact was not zero. 

  4. Grammar knowledge as measured using a teacher quiz did not improve for teachers who had done Grammar for Writing, although there was some evidence that this quiz was not a reliable measure. In contrast, more than 90% of surveyed teachers agreed that they found the programme, training and materials useful in their teaching

  5. Nearly three-quarters of intervention teachers indicated that they had adapted the programme for delivery.In addition,fidelity to two of the key programme principles, ‘connections made between grammar and effect/purpose in writing’ and ‘discussion used to tease out thinking and choice-making’ was regarded by the evaluator to be compromised in a number of the schools observed.

  1. Updated: 16th May, 2019

    Printable project summary

    1 MB pdf - EEF-grammar-for-writing-effectiveness-trial.pdf

  2. Updated: 16th May, 2019

    Evaluation report

    3 MB pdf - Grammar_for_Writing.pdf

  3. Updated: 12th June, 2017

    Evaluation Protocol

    431 KB pdf - Regrant_-_Grammar_for_Writing_effectiveness.pdf

  4. Updated: 13th November, 2017

    Statistical Analysis Plan

    608 KB pdf - Regrant_-_Grammar_for_Writing_SAP.pdf

  5. Updated: 18th June, 2018

    Statistical Analysis Plan (amended)

    601 KB pdf - Grammar_for_Writing_SAP.pdf

Full project description