Measure your 4.º ESO students' writing
and compare it with other schools
Take part with your whole 4.º ESO cohort in each language you choose and receive, within three weeks, a report with results by student, class and school.
Writing diagnosis
4.º ESO · 71 students
School standing
School mean
At the expected level
Your school against the average
Below expectations (24%)
< 50
Meets expectations (69%)
≥ 50
Exceeds expectations (7%)
≥ 78
October 2026 · Limited places
A clear picture of writing at your school
Not an impression. Not an isolated grade. A common measure.
Student information
The report presents each student's data in detail and in a form that is easy to read:
- A writing score in Spanish and English on the same scale.
- The student's position within their class and across all participants.
- How the level evolves from one test to the next.
Student result
M. Torres · Group A
Spanish
3 / 24 in their class
English
7 / 24 in their class
Level over time
+17Strengths
Areas to improve
Class information
The test runs in a single class session and the results are presented by group:
- Distribution of the results of every student in the group.
- Class median and comparison with the school's other groups.
- The group's most common errors and what to reinforce in class.
Results by student
Group mean 64.7 · 18 students
Each bar is one student in the group, ordered from highest to lowest.
School information
At school level, the report aggregates the results of every participating class:
- The school's standing and percentile against the other participating schools.
- The school mean and its distance from the benchmark mean.
- Share of students reaching the expected level in each language.
Participating schools
#4 of 18 schools · 78th percentile
The benchmark is always shown in aggregate. Every other school appears anonymised.
School group information
If you belong to a group with several schools, the report also compares them with each other:
- The writing level of every school in the group on the same scale.
- Differences between Spanish and English, school by school.
- The group mean and where each school sits against it.
Schools in the group
Schools
5
Group mean
55.7
Max. gap
14.7
Your school
#2/559.2
+3.5 vs. group mean
School 3
#1School 1
#3School 5
#4School 2
#5Only the group sees this comparison between its own schools.
You already assess a lot.
Now it is time to compare writing properly.
You have grades, essays, averages and certifications. But hardly ever a clear answer to this question:
How good is our 4.º ESO students' writing compared with other schools?
Grades
They are there to mark subjects.
Essays
They can depend on each teacher's judgement.
Certifications
They only measure the students who sit them.
Internal tests
They do not allow comparison with other schools.
What is missing is not information. It is a common scale.
Taking part is very simple
- 1
You run the test
One class session using our prompts.
- 2
You upload the texts
You, or whoever the school appoints.
- 3
You receive the report
Results by student, class and school in three weeks.
Next sitting
October 2026
Writing
5 – 17 October
Assessment
19 – 25 October
Results
28 October
Upcoming sittings: February 2027 · May 2027
We do not grade each text.
We compare them.
Comparative Judgement turns thousands of simple decisions into a common writing scale.
Text A
Text B
Which of the two texts is better?
Thousands of comparisons
Each text is compared several times against different texts.
One common scale
A statistical model ranks every piece of writing on a continuous scale.
Benchmark essays
Calibrated essays of known level are added to the analysis, marking the performance bands along the scale.
Student · Class · School
That scale yields each student's position, the distance between classes and the benchmark across schools.
A methodology developed by leading universities
We did not invent it. It starts with Thurstone's law of comparative judgement (1927) and reaches writing assessment through Cambridge Assessment's Adaptive Comparative Judgement. Decades of research and validation behind it.
With rubrics:
every teacher reads the criteria their own way, so marks are not comparable across classes or schools.
By comparing:
picking the better of two texts is a simpler, more consistent decision, and thousands of decisions build one common, reliable scale.
It is a methodology used at scale in the United Kingdom to assess writing.
People and AI, each in its place
That combination results in the most precise writing assessment system in the sector.
People bring the judgement.
Every text is seen at least once by a human assessor.
Specialised AI scales the process.
Our AI system, already used by hundreds of schools, adds dozens of extra comparisons on every text.
AI does not decide on its own, nor does it assign academic grades.
How good is your 4.º ESO students' writing?
If the honest answer is “we have a hunch, but we do not know”, this assessment is for you.