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Investigating the impact of the ‘1stClass@Number 1’ intervention on maths attainment for Year 2 pupils

Randomised controlled effectiveness trial investigating the effect of participation in the ‘1stClass@Number 1’ targeted intervention on maths attainment amongst Year 2 pupils

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN14875632
Enrollment
1688
Registered
2023-08-30
Start date
2023-03-01
Completion date
Unknown
Last updated
2025-09-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Maths attainment amongst 6- and 7-year-old pupils that are experiencing moderate difficulties with the subject Other

Interventions

The initial shortlist of suitable pupils nominated by teachers at each school will first need to be reduced to exactly 8 pupils to be randomised per school, so that the intervention can be delivered a
see protocol for description). Randomisation will then be carried out by an NFER Statistician using R code, in a 1:1 ratio of control to intervention. Randomisation will be stratified by school and F

Sponsors

Education Endowment Foundation
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: School inclusion criteria: 1. Infant or primary schools with children in Year 2, as of 1st September 2023 2. Located in one of the English regions where training will take place: North East, East Sussex, West Sussex, Cambridgeshire, Dorset, Derby, Northamptonshire, Liverpool, Birmingham, North and South Manchester, Lancashire, Rotherham 3. Able to nominate a TA and a Link teacher who is able to access face-to-face training in one of the 16 training venues 4. Willing to pay the subsidised training cost of £200 (usual cost is £1,100) Pupil inclusion criteria: 1. Attendance at a school that meets the above criteria 2. Completing Year 2 during the 2023/2024 academic year 3. Selected by class teacher as appropriate for the intervention. A number of factors influence selection, in particular that pupils should be achieving at around 12 months behind age-related expectations towards the end of Year 1. This trial has a focus on the impact of 1stClass@Number 1 on disadvantaged pupils, especially those in receipt of Free School Meals (FSM). Schools with a high number of FSM pupils were targeted, and pupils eligible for FSM were more likely to be selected (though neither was used as a definitive selection criterion).

Exclusion criteria

Exclusion criteria: School exclusion criteria: 1. Taking part in the following EEF-funded programmes in the academic years 2023-24: ARK Mathematics Mastery or Mathematical Reasoning 2. Has a TA currently working in the school who has already completed any 1stClass@Number 1 training 3. Has delivered 1stClass@Number 1 after 1st September 2019 Pupil exclusion criteria: 1. Participating in another mathematics intervention when 1stClass@Number 1 is being delivered (autumn 2023/spring 2024)

Design outcomes

Primary

MeasureTime frame
Quantitative Reasoning Test score, 0-20 continuous scale, obtained from tests administered at schools by NFER test administrators. This is measured before (i.e. the baseline or pretest measure) and after 15 weeks of pupil participation in the intervention.

Secondary

MeasureTime frame
There are no secondary outcome measures

Countries

England, United Kingdom

Contacts

Public ContactAarti Sahasranaman
a.sahasranaman@nfer.ac.uk+44 (0)1753 574123

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026