Torsö Skärgårdsskola in Mariestad
Headmaster: Annie Jonzon
47 /100
Skolkoll Score 47 out of 100. The scale goes from 0 (lowest) to 100 (highest). 50 is the average. This value is below average. What is the Skolkoll Score? Torsö Skärgårdsskola is a small independent compulsory school with 40 pupils.
Torsö Skärgårdsskola is a small independent compulsory school with 40 pupils. The share of qualified teachers (71%) is below the national average of 74%.
- 40PupilsMunicipality: 2,430High reliability
- 71%Qualified teachersMunicipality: 65% · Sweden: 74%High reliability
- 12.3Pupils per teacherMunicipality: 11.8 · Sweden: 12.1High reliability
- 143,176 SEKCost per pupil (municipal avg.)Sweden: 142,155 SEKLimited history
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 4 academic years. Visit each source for the full time series.
| Academic year | Pupils | Qualified teachers | Avg. grade | Cost/pupil (municipality) |
|---|---|---|---|---|
| 2526 | 40 | 71% | — | — |
| 2324 | — | 85% | — | — |
| 2223 | — | 86% | — | — |
| 2122 | — | 80% | — | — |
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.
One chronological history
3 priority events out of 6 total: Authority record · Lifecycle · School started; Computed signal · Signal · Qualified teachers changed unusually much; Computed signal · Signal · Pupils per teacher changed unusually much.
Quick overview 1 Source history 0 In-depth 3 Computed 2
All 6 Lifecycle 1 Statistics 3 Signal 2
high 4 medium 2 low 0
Combined timeline
All history rows are shown in one chronology. The row type and data-trust labels separate confirmed authority records, contextual data and Skolkoll's own calculated signals.
- Computed signal Computed
Signal Qualified teachers changed unusually much
Qualified teachers decreased by 15 pp from 85% to 71% between 2024 and 2026. This is a calculated signal, not a register decision.
Technical provenance
- Detector
- skv4-metric-signal-thresholds-v1
- Schema
- 1
- Statistics vintage In-depth
Statistics Pupil count: statistics vintage available
Pupil count is available for 2026. This is data availability, not a school event.
Technical provenance
- Detector
- skv4-statistics-availability-v1
- Schema
- 1
- Statistics vintage In-depth
Statistics Pupils per teacher: statistics vintage available
Pupils per teacher is available for 2026. This is data availability, not a school event.
Technical provenance
- Detector
- skv4-statistics-availability-v1
- Schema
- 1
- Statistics vintage In-depth
Statistics Qualified teachers: statistics vintage available
Qualified teachers is available for 2026. This is data availability, not a school event.
Technical provenance
- Detector
- skv4-statistics-availability-v1
- Schema
- 1
- Computed signal Computed
Signal Pupils per teacher changed unusually much
Pupils per teacher increased by 22% from 10.1 to 12.3 between 2023 and 2024. This is a calculated signal, not a register decision.
Technical provenance
- Detector
- skv4-metric-signal-thresholds-v1
- Schema
- 1
- Authority record Quick overview
Lifecycle School started
Skolverket records 2013-10-01 as the start date for this compulsory school operated by Torsö Skärgårdsskola Ekonomisk förening, current status AKTIV.
Technical provenance
- Detector
- skv4-register-start-date-v1
- Schema
- 1
Register sources: Skolverket (fetched 31 May 2026), the Swedish Schools Inspectorate (fetched 3 May 2026) and group lookup from Bolagsverket/Skolkoll. Computed signals are marked as "Skolkoll calculation" and use year-level date precision.
Does something look wrong? Report an error in the history.
Pupil forecast — Mariestad
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.
Source: SCB (population forecast for Mariestad municipality, by school-form age group).
Mariestad 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.
| Measure | 2025 | 2024 | 2023 | 2022 | 2021 |
|---|---|---|---|---|---|
| Pupils | 2,417 | 2,434 | 2,436 | 2,405 | 2,349 |
| Merit value yr 9 | 204.4 | 208.7 | 219.1 | 207.5 | 215.1 |
| Eligibility for upper secondary | 65.7% | 68.9% | 66.6% | 67.6% | 69.8% |
| Pupils per teacher | 11.2 | 11.5 | 11.5 | 11.3 | 11.2 |
| Cost per pupil | — | 143,176 SEK | 124,673 SEK | 113,208 SEK | 115,486 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.
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Pupil count, qualifications, grades, teacher numbers per school
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Model-based expected results based on pupil composition
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Inspection decisions, remarks, complaints
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Fetch date is missing in dataset metadata; no school-register date is used as a substitute.
Population and economic data
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Municipal key figures, financial data per school form
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Fetch date is missing in dataset metadata; no school-register date is used as a substitute.
Property register, buildings, orthophotos (CC BY 4.0)
Methodology and definitions
- Skolkoll methodology (overview) — how data is fetched, validated and displayed.
- Skolkoll Score — calculation, weighting, interpretation guide.
- SALSA model — what it measures and what it doesn't.
- Qualified teachers — definition and data source.
- Corrections policy — how errors are fixed and documented.
Export
Download data for your own analysis. Files are CSV with UTF-8 encoding.