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Your AI-powered partner for assessing English Writing

Super-granular diagnosis & more time to act on it.

We’ve developed an AI feedback system for KS2-3 writing that thinks like a teacher. It reliably captures the detail, not just the summary, so teachers and leaders can make informed decisions about what to teach next, and to whom.
We’ve developed an AI feedback system for KS2-3 writing that thinks like a teacher. It reliably captures the detail, not just the summary, so teachers and leaders can make informed decisions about what to teach next, and to whom.
We’ve developed an AI feedback system for KS2-3 writing that thinks like a teacher. It reliably captures the detail, not just the summary, so teachers and leaders can make informed decisions about what to teach next, and to whom.
BESA Awards 2025: Winner
BESA Awards 2025: Winner
BESA Awards 2025: Highly Commended
BESA Awards 2025: Highly Commended
MAT Excellence Awards 2026: shortlisted
MAT Excellence Awards 2026: shortlisted
Bett Awards 2026 finalist: Bett Innovation Award
Bett Awards 2026 finalist: Bett Innovation Award
Bett Awards 2026 finalist: AI for Teaching and Assessment
Bett Awards 2026 finalist: AI for Teaching and Assessment
Bett Awards 2026 finalist: Bett Innovation Award
Bett Awards 2026 finalist: AI for Teaching and Assessment

Reliable & relatable:
not another AI ‘tool’

Reliable & relatable: not another AI ‘tool’

The thinking of expert English teachers plus continuing teacher moderation equals reliable insight any teacher can action without the time your teachers spend now.

The thinking of expert English teachers plus continuing teacher moderation equals reliable insight any teacher can action without the time your teachers spend now.

Human-centric workflow

On paper

Too often, implementing AI means more time in front of screens. Our process is optimised for paper: students write by hand, teachers scan their work via the document tray of the photocopier, and you get back paper-based feedback reports

Too often, implementing AI means more time in front of screens. Our process is optimised for paper: students write by hand, teachers scan their work via the document tray of the photocopier, and you get back paper-based feedback reports

Human-centric workflow

On paper

Too often, implementing AI means more time in front of screens. Our process is optimised for paper: students write by hand, teachers scan their work via the document tray of the photocopier, and you get back paper-based feedback reports

Teacher-improved accuracy

With rigour

We mapped every micro-decision in the assessment of English writing, so teachers can see exactly where successes and errors are occurring. Our team of markers continuously improve our AI output. Nothing is deployed until it is being marked as accurately as a human.

We mapped every micro-decision in the assessment of English writing, so teachers can see exactly where successes and errors are occurring. Our team of markers continuously improve our AI output. Nothing is deployed until it is being marked as accurately as a human.

Teacher-improved accuracy

With rigour

We mapped every micro-decision in the assessment of English writing, so teachers can see exactly where successes and errors are occurring. Our team of markers continuously improve our AI output. Nothing is deployed until it is being marked as accurately as a human.

Unlimited marking

More practice

Even the most accurate and efficient teacher is a blocker to students receiving marked writing practice. Instead, unlimited student writing can contribute cumulatively to understanding their strengths & weaknesses.

Even the most accurate and efficient teacher is a blocker to students receiving marked writing practice. Instead, unlimited student writing can contribute cumulatively to understanding their strengths & weaknesses.

Unlimited marking

More practice

Even the most accurate and efficient teacher is a blocker to students receiving marked writing practice. Instead, unlimited student writing can contribute cumulatively to understanding their strengths & weaknesses.

Detailed analytics

More insight

All your students’ data is captured on your teacher dashboard. Compare scans, filter results, and explore scores at individual criterion level.

All your students’ data is captured on your teacher dashboard. Compare scans, filter results, and explore scores at individual criterion level.

All your students’ data is captured on your teacher dashboard. Compare scans, filter results, and explore scores at individual criterion level.

Traditional workflow, modernised: AI support with a paper interface

How students learn hasn’t changed, so why change the way students learn? Our approach keeps students using a pen and paper: here’s how it works.

First piece of writing
Pupils write by hand, as usual

Your questions about their writing, answered in detail.

Super-granular insight across every piece, from one class to a whole trust, to help you plan what to teach and who to teach it to.

01How did they do on this piece?
Click a report to read it

Learn

From our schools, and from our team

What schools are seeing with stylus, and what we’re learning about writing and feedback.

Customer stories

All customer stories →

Primary school · Sydenham, south-east London

Our Lady & St Philip Neri Catholic Primary School

“It sits inside the teaching cycle and that is exactly where it should be.”

Marie Ann Barlow, Writing Lead

Primary school · Huddersfield, West Yorkshire

Spring Grove Primary School

“We are very close in agreement with the AI and the moderation.”

Nadeem Sarwar, Assistant Head

Multi-academy trust · 11 primary schools

InMAT

“Everyone’s getting the same message from a trust point of view, which makes moderation easier.”

Simon Blight, School Improvement Lead

Secondary school · Braintree, Essex

Alec Hunter Academy

More time for teaching. Clearer next steps for every writer.

Teaching and Learning

·

Back to the Future: What Did Marking KS2 Teach Me as a KS3 Teacher?

Teaching and Learning

·

How do you know if feedback is any good?

Announcements

·

Press Release: stylus awarded UK Government Contract for Innovation to embed AI-driven writing assessment

AI in Education

·

AI in Schools: Understanding Data Protection, Privacy, and Student IP

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In case you missed anything

We're here to answer all your questions.

Do teachers still need to mark work or does stylus do it all?

Can AI read students’ handwriting?

Does AI mark as accurately as a human teacher?

Do you use student work to train LLMs?

Do you offer trials?