Trollhättans Montessoriskola in Trollhättan

Compulsory schoolYear 1–6Operator: Trollhättans Montessoriskola Aktiebolag · Trollhättan, Västra Götalands County

Headmaster: Gun Söderström Larsson

43
around the national midpointShows where a school sits within a comparison group. Percentile 80 means the school ranks above roughly 80 percent of that group.Compared to all compulsory schools nationally
Skolkoll Score 43 out of 100. The scale goes from 0 (lowest) to 100 (highest). 50 is the average. Better than 50% of Sweden’s compulsory schools.

A composite of five open data sources — a starting point, not a grade.

Data coverageMedium2/5
Why this score?

Skolkoll score is Skolkoll's composite indicator based on available data sources. It is not an official quality measure and should be read together with the underlying data.

2 of 5 score dimensions have school-specific data.

When school-specific data is missing for a dimension, the neutral value 50 is used. That does not automatically lower the school, but it makes the score less informative.

What is the Skolkoll Score?
No image yet — click to contribute.

Trollhättans Montessoriskola is a small independent compulsory school with 80 pupils.

Trollhättans Montessoriskola is a small independent compulsory school with 80 pupils. The share of qualified teachers (65%) is below the national average of 72%.

Skip table of contents

The Data view is optimised for in-depth analysis: history, sources, methodology and export. For a summary interpretation, see Overview.

Key figures over time

Summary of the central metrics for the most recent 5 academic years. Visit each source for the full time series.

Academic yearPupilsQualified teachersAvg. gradeCost/pupil (municipality)
2025/268065%——
2024/25—77%——
2023/24—57%——
2022/23—71%——
2021/22—54%——

Source: Skolverket + Kolada (cost is municipal average, not school-specific).

School history

Events from Skolverket's unit register, Skolinspektionen inspections, group history, and locally-computed statistical signals are shown in one chronology. Each row states its row type, origin and data trust so authority data is not mixed up with Skolkoll's own signals.

School history

3 priority events out of 19 total: Authority record · Operator name changed; Authority decision · Injunction; Authority record · School started.

Showing all 19 events. Enable JavaScript to filter the timeline.

Quick overview

Choose which layers to show in the same date-ordered timeline.

  1. Computed signalSignalSkolverket

    Qualified teachers changed unusually much

    Qualified teachers decreased by 12 pp from 77% to 65% between 2025 and 2026. This is a calculated signal, not a register decision.

    medium reliabilityknown year
    Show detailsHide details
    Source
    Skolverket
    Reliability
    Medium: the information is derived from several sources and should be read as context.
    What the date means
    Only the year is known, so the event is placed at year level.

  2. Statistics vintageStatisticsSkolverket

    Pupil count: statistics vintage available

    Pupil count is available for 2026. This is data availability, not a school event.

    high reliabilityknown year
    Show detailsHide details
    Source
    Skolverket
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    Only the year is known, so the event is placed at year level.

  3. Statistics vintageStatisticsSkolverket

    Pupils per teacher: statistics vintage available

    Pupils per teacher is available for 2026. This is data availability, not a school event.

    high reliabilityknown year
    Show detailsHide details
    Source
    Skolverket
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    Only the year is known, so the event is placed at year level.

  4. Statistics vintageStatisticsSkolverket

    Qualified teachers: statistics vintage available

    Qualified teachers is available for 2026. This is data availability, not a school event.

    high reliabilityknown year
    Show detailsHide details
    Source
    Skolverket
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    Only the year is known, so the event is placed at year level.

  5. Authority recordContactSkolverket

    Contact details changed

    From "url: http://www.trilobiten.nu, email: info@trilobiten.nu, phone: 0520-74180" to "url: http://www.trilobiten.nu, email: info@trilobiten.nu, phone: 0730-239635".

    high reliabilityfound in data check
    Show detailsHide details
    Source
    Skolverket
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    The date shows when Skolkoll found the change in a data check. The change may have happened earlier.

  6. Computed signalSignalSkolverket

    Qualified teachers changed unusually much

    Qualified teachers increased by 20 pp from 57% to 77% between 2024 and 2025. This is a calculated signal, not a register decision.

    medium reliabilityknown year
    Show detailsHide details
    Source
    Skolverket
    Reliability
    Medium: the information is derived from several sources and should be read as context.
    What the date means
    Only the year is known, so the event is placed at year level.

  7. Authority recordHeadmasterSkolverket

    Head changed

    The principal changed in the register. The name is not shown in history.

    high reliabilityfound in data check
    Show detailsHide details
    Source
    Skolverket
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    The date shows when Skolkoll found the change in a data check. The change may have happened earlier.

  8. Computed signalSignalSkolverket

    Qualified teachers changed unusually much

    Qualified teachers decreased by 14 pp from 71% to 57% between 2023 and 2024. This is a calculated signal, not a register decision.

    medium reliabilityknown year
    Show detailsHide details
    Source
    Skolverket
    Reliability
    Medium: the information is derived from several sources and should be read as context.
    What the date means
    Only the year is known, so the event is placed at year level.

  9. Authority recordHeadmasterSkolverket

    Head changed

    The principal changed in the register. The name is not shown in history.

    high reliabilityfound in data check
    Show detailsHide details
    Source
    Skolverket
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    The date shows when Skolkoll found the change in a data check. The change may have happened earlier.

  10. Computed signalSignalSkolverket

    Qualified teachers changed unusually much

    Qualified teachers increased by 17 pp from 54% to 71% between 2022 and 2023. This is a calculated signal, not a register decision.

    medium reliabilityknown year
    Show detailsHide details
    Source
    Skolverket
    Reliability
    Medium: the information is derived from several sources and should be read as context.
    What the date means
    Only the year is known, so the event is placed at year level.

  11. Authority recordNameSkolverket

    Operating name started being reported

    Skolverket started reporting the operating name "Trollhättans Montessoriskola". This is source history, not a confirmed name change.

    high reliabilityfound in data check
    Show detailsHide details
    Source
    Skolverket
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    The date shows when Skolkoll found the change in a data check. The change may have happened earlier.

  12. Authority recordHeadmasterSkolverket

    Head changed

    The principal changed in the register. The name is not shown in history.

    high reliabilityfound in data check
    Show detailsHide details
    Source
    Skolverket
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    The date shows when Skolkoll found the change in a data check. The change may have happened earlier.

  13. Authority recordHeadmasterSkolverket

    Head changed

    The principal changed in the register. The name is not shown in history.

    high reliabilityfound in data check
    Show detailsHide details
    Source
    Skolverket
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    The date shows when Skolkoll found the change in a data check. The change may have happened earlier.

  14. Authority recordOperatorSkolverket

    Operator name changed

    From "Trollhättan Montessoriskola AB" to "TROLLHÄTTANS MONTESSORISKOLA AKTIEBOLAG".

    high reliabilityfound in data check
    Show detailsHide details
    Source
    Skolverket
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    The date shows when Skolkoll found the change in a data check. The change may have happened earlier.

  15. Authority decisionInspectionSwedish Schools Inspectorate

    Injunction

    Decision includes injunction, fine or serious deficiency. Document title: Regelb. tillsyn Skolbeslut Trollhättan Montessoriskolan Trilobiten, 2015 (pdf, 4545 kB).

    high reliabilityknown date

    Read decision (PDF) ↗

    Show detailsHide details
    Source
    Swedish Schools Inspectorate
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    The date is a known decision, publication or register date.

  16. Authority recordHeadmasterSkolverket

    Head changed

    The principal changed in the register. The name is not shown in history.

    high reliabilityfound in data check
    Show detailsHide details
    Source
    Skolverket
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    The date shows when Skolkoll found the change in a data check. The change may have happened earlier.

  17. Authority recordHeadmasterSkolverket

    Head changed

    The principal changed in the register. The name is not shown in history.

    high reliabilityfound in data check
    Show detailsHide details
    Source
    Skolverket
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    The date shows when Skolkoll found the change in a data check. The change may have happened earlier.

  18. Authority recordLifecycleSkolverket

    School started

    Skolverket records 2013-10-01 as the school's start date.

    high reliabilityknown date
    Show detailsHide details
    Source
    Skolverket
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    The date is a known decision, publication or register date.

  19. Authority decisionInspectionSwedish Schools Inspectorate

    Inspection decision published

    Inspection or review decision registered. Document title: Utb.insp. Linköping Montessoriskolan Trilobiten fristående grundskola, 2005 (pdf, 178 kB).

    high reliabilityknown date

    Read decision (PDF) ↗

    Show detailsHide details
    Source
    Swedish Schools Inspectorate
    Reliability
    High: the information comes from an authority source or a matched authority decision.
    What the date means
    The date is a known decision, publication or register date.

Register sources: Skolverket (fetched 5 Jul 2026), the Swedish Schools Inspectorate (fetched 3 Jul 2026) and group lookup from Bolagsverket/Skolkoll. Computed signals are marked separately and use year-level date precision.

Does something look wrong? Report an error in the history.

Quality data (Skolverket Statistical Database)

Costs, personnel data and school survey results from Skolverket's quality system.

Personnel

Permanently employed
100% Limited historyThere is still too little history to interpret the trend safely.This affectsPermanently employed teachersThis staffing metric is affected by FTE definitions, local reporting practices, and temporary vacancies.Read more about the method →
Senior teachers (förstelärare)
—Data missing — the Swedish National Agency for Education has not published this value.
Teacher turnoverThe proportion of staff replaced during a year. High staff turnover may indicate instability or recruitment difficulties.Read more in glossary →
11.4%
Certified in subject(s)
77.1% (licensed and certified for teaching subject)
Teachers (FTE)
7.3
Share of female teachers
87.6%

Source: Skolverket Statistical Database (Statistikdatabasen). Updated annually.

Demography

Pupil forecast — Trollhättan

Number of children in the age group ages 6–15 in the municipality, according to SCB's forecast.

Forecast covers all children in this age group across the entire municipality — not just this school's catchment. Local enrolment depends on school choice and migration patterns.

ages 6–15 (2025)7,026
ages 6–15 (2030)6,546
ages 6–15 (2035)6,014
Change 2025→2030-6.8%

Source: SCB (population forecast for Trollhättan municipality, by school-form age group).

Trollhättan municipality — history (school form: compulsory school)

Municipality-aggregated key figures from Kolada over the most recent 5 years. Shown as municipality average — not school-specific values — because Kolada reports financial and pedagogical metrics at school-form level per municipality.

Measure20252024202320222021
Pupils6,2506,2546,3116,3756,415
Merit value yr 9227.3222.9229.5229.3224.9
Eligibility for upper secondary71.4%68.4%68.8%69.9%69.4%
Pupils per teacher12.412.212.311.812.2
Cost per pupil140,120 SEK142,196 SEK135,819 SEK126,989 SEK121,118 SEK

Source: Kolada (Swedish council for municipal analyses).

Data sources

Skolkoll is built exclusively on public data sources. Each row below shows the source, fetch date, and which metrics come from it.

Methodology and definitions

Export

Download data for your own analysis. Files are CSV with UTF-8 encoding.

Open data — all schools