Purple

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Purple

Book your demo

Impact evaluation software for schools, trusts & educational organisations

Measure what works

Measure what works

Measure what works

Most platforms track activity. Purple helps evaluate outcomes.

Most platforms track activity. Purple helps evaluate outcomes.

Most platforms track activity. Purple helps evaluate outcomes.

Purple helps schools, trusts and educational organisations understand whether provision and strategies are associated with meaningful change. Combine provision tracking, benchmarking, statistical analysis and long-term evaluation within one connected platform.

Book your demo

Book your demo

WHY IMPACT EVALUATION MATTERS

The outcome improved.
Did the provision cause it?

The outcome improved.
Did the provision cause it?

What most reporting says

Attendance improved

Attendance improved

89% → 92%

89% → 92%

“the provision worked.”

“the provision worked.”

What Purple asks

Was attendance already improving?

Was attendance already improving?

Did similar pupils improve too?

Did similar pupils improve too?

Did participants engage?

Did participants engage?

Was the improvement sustained?

Was the improvement sustained?

Context matters because improvement and impact are not the same thing.

Context matters because improvement and impact are not the same thing.

Purple combines benchmarking, engagement analysis and advanced statistical modelling to understand whether provisions are genuinely associated with positive change.

Purple combines benchmarking, engagement analysis and advanced statistical modelling to understand whether provisions are genuinely associated with positive change.

PURPLE BENCHMARKING

Compare like with like.

Compare like with like.

Raw outcomes rarely provide a fair comparison. Purple benchmarks pupils receiving a provision against relevant cohorts with shared characteristics, then adjusts outcome measures for attendance. This helps leaders understand whether change is stronger than the pattern seen among comparable pupils who did not receive the same support.

Raw outcomes rarely provide a fair comparison. Purple benchmarks pupils receiving a provision against relevant cohorts with shared characteristics, then adjusts outcome measures for attendance. This helps leaders understand whether change is stronger than the pattern seen among comparable pupils who did not receive the same support.

Relevant cohorts


Purple compares provision participants with pupils who share relevant characteristics but are not receiving the same provision.

PUPIL RECEIVING SUPPORT

Female · Pupil Premium · Year 9

Receiving the provision

RELEVANT COMPARISON COHORT

Female · Pupil Premium · Year 9

Female · Pupil Premium · Year 9

Female · Pupil Premium · Year 9

Not receiving the provision

PURPLE CAN NOW ASK

Did the provision cohort improve?

Did the relevant comparison cohort improve too?

Was the difference sustained over time?

Comparing like with like helps distinguish provision-related movement from change that may also be occurring among relevant pupils who did not receive the support.

Relevant cohorts

Purple compares provision participants with pupils who share relevant characteristics but are not receiving the same provision.

PUPIL RECEIVING SUPPORT

Female

Pupil Premium

Year 9

Receiving the provision

RELEVANT COMPARISON COHORT

Female · Pupil Premium · Year 9

Female · Pupil Premium · Year 9

Female · Pupil Premium · Year 9

Not receiving the provision

PURPLE CAN NOW ASK

Did the provision cohort improve?

Did the relevant comparison cohort improve too?

Was the difference sustained over time?

Comparing like with like helps distinguish provision-related movement from change that may also be occurring among relevant pupils who did not receive the support.

A fairer view of impact.

A fairer view of impact.

Purple combines relevant cohort benchmarking, attendance adjustment and continued outcome analysis to provide a more meaningful interpretation of provision impact than raw figures alone.

Purple combines relevant cohort benchmarking, attendance adjustment and continued outcome analysis to provide a more meaningful interpretation of provision impact than raw figures alone.

FROM PROVISION TO IMPACT

Purple combines provision tracking, advanced statistical analysis, benchmarking and long-term impact evaluation to move you from activity reporting to evidence-based decision making.

Need

Need

What was happening before support began?

Support

Support

What support was delivered, when and to whom?

Participation

Participation

How consistently did people take part?

Analysis

Analysis

Did outcomes differ from the prior trend or benchmark?

Impact

Impact

What does the evidence justify next?

ACTIVITY

CHANGE

CONTEXT

ANALYSIS

EVIDENCE

DECISION

THE PURPLE EVALUATION METHOD

One provision.
More meaningful evidence.

PRIOR

What was happening before support began?

DURING

What happened while support was delivered?

POST

Did improvement continue afterwards?

Includes long-term review.

PURPLE · IMPACT EVALUATION

Mentoring programme · Year 9

PRIOR · BASELINE

Attendance trajectory

Sep 2025 — Jul 2026

Selected cohort

Matched comparison

PRIOR EVIDENCE

87.4%

Baseline attendance before delivery begins.

Prior direction · improving

Seasonality · accounted for

Comparison · matched cohort

INTERPRETATION

Improvement had already started. Later gains must exceed the established prior trajectory.

PRIOR

What was happening before support began?

DURING

What happened while support was delivered?

POST

Did improvement continue afterwards?

Includes long-term review.

PURPLE · IMPACT EVALUATION

Mentoring programme · Year 9

PRIOR · BASELINE

Attendance trajectory

Sep 2025 — Jul 2026

Selected cohort

Matched comparison

PRIOR EVIDENCE

87.4%

Baseline attendance before delivery begins.

Prior direction · improving

Seasonality · accounted for

Comparison · matched cohort

INTERPRETATION

Improvement had already started. Later gains must exceed the established prior trajectory.

Impact is rarely found in a single result. It becomes clearer when outcomes are viewed before, during and after support.

Impact is rarely found in a single result. It becomes clearer when outcomes are viewed before, during and after support.

THE WHOLE PATTERN MATTERS

Impact is rarely one-dimensional.

Impact is rarely one-dimensional.

Impact is rarely one-dimensional.

Purple reads vulnerability, attendance, behaviour, achievement and suspensions together—because the overall pattern matters more than any single metric.

Purple reads vulnerability, attendance, behaviour, achievement and suspensions together—because the overall pattern matters more than any single metric.

ATTENDANCE

ATTENDANCE

+4.6

Attendance improved, but the prior trajectory suggests only part of the rise is new.

BEHAVIOUR

BEHAVIOUR

−18%

Incidents fell most sharply among pupils receiving sustained support.

ACHIEVEMENT

ACHIEVEMENT

+0.3

Progress is stable—not yet enough evidence to claim a programme effect.

SUSPENSIONS

SUSPENSIONS

−31%

The fall persists after delivery and differs from the matched benchmark.

THE OVERALL PATTERN

A credible evaluation asks how outcomes move together—and which evidence can reasonably explain the pattern.

A credible evaluation asks how outcomes move together—and which evidence can reasonably explain the pattern.

FROM TRUST-WIDE INSIGHT TO PUPIL-LEVEL IMPACT

Zoom in on what is making a difference

Start with the trust-wide picture, then explore impact by school, provision, group and individual pupil.

Purple connects every level of the evidence, helping leaders understand overall performance while giving teams the detail they need to see who participated, what changed and where support is making the greatest difference.

Purple allows users to move from trust-wide insight through school, provision and group-level analysis to an individual pupil’s outcomes.
TRUST · 12 SCHOOLS
Compare outcomes across your trust
SCHOOL · YEAR 9
Identify variation between schools
PROVISION · MENTORING
Measure the impact of provision
GROUP · 18 PUPILS
Understand outcomes for specific cohorts
PUPIL · A.H.
Attendance increased by 4%
Continued improvement over time

Make your next decision easier to defend.

Bring the questions that matter. We’ll show how Purple connects provision tracking, analysis and long-term evidence around the choices your organisation needs to make.

Book an evidence-led demo

Free personalised demonstration

Tailored to your evidence questions

No pressure or obligation

EVIDENCE DESERVES A NEXT STEP

Make your next decision easier to defend.

Bring the questions that matter. We’ll show how Purple connects provision tracking, analysis and long-term evidence around the choices your organisation needs to make.

Book an evidence-led demo

Free personalised demonstration

Tailored to your evidence questions

No pressure or obligation

EVIDENCE DESERVES A NEXT STEP

Make your next decision easier to defend.

Bring the questions that matter. We’ll show how Purple connects provision tracking, analysis and long-term evidence around the choices your organisation needs to make.

Book an evidence-led demo

Free personalised demonstration

Tailored to your evidence questions

No pressure or obligation