Tjörns montessori skola och förskola in Tjörn

Compulsory schoolYear 1–3Operator: Tjörns Montessoriskola Ekonomisk förening · Tjörn, Västra Götalands County

Headmaster: Helene Susanna Antonson

Tjörns montessori skola och förskola is a small independent compulsory school with 20 pupils.
Tjörns montessori skola och förskola is a small independent compulsory school with 20 pupils.

20
Pupils
Municipality: 1,570
High reliability
175,456 SEK
Cost per pupil (municipal avg.)
Sweden: 144,179 SEK
Limited history

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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)
2025/26	20	—	—	—
2023/24	—	54%	—	—
2022/23	—	36%	—	—
2021/22	—	36%	—	—

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 20 total: Authority record · Status changed; Authority record · Operator name changed; Authority record · Visiting address changed.

Important6Register changes16Context3Signals1

Showing all 20 events. Enable JavaScript to filter the timeline.

Quick overview

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

2026
2026
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.
2025
2025-06-05
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.
2024
2024
Computed signalSignalSkolverket
Qualified teachers changed unusually much
Qualified teachers increased by 18 pp from 36% to 54% 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.
2024
Statistics vintageStatisticsSkolverket
Pupils per teacher: statistics vintage available
Pupils per teacher is available for 2024. 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.
2024
Statistics vintageStatisticsSkolverket
Qualified teachers: statistics vintage available
Qualified teachers is available for 2024. 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.
2024-12-04
Authority recordProgrammesSkolverket
Year levels changed
From "1, 2, 3, 4, 5" to "1, 2, 3".
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.
2023
2023-06-29
Authority recordContactSkolverket
Contact details changed
From "url: http://www.langekarrsskolan.se, email: gabriella@langekarrsskolan.se, phone: 070-9310760" to "url: http://www.tjornsmontessori.se, email: rektor@tjornsmontessori.se, phone: 0700-901599".
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.
2023-06-29
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.
2023-06-29
Authority recordNameSkolverket
Operating name started being reported
Skolverket started reporting the operating name "Tjörns montessori skola och förskola". 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.
2023-06-29
Authority recordOperatorSkolverket
Operator name changed
From "Långekärrskolan ekonomisk förening" to "Tjörns Montessoriskola Ekonomisk förening".
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.
2023-06-29
Authority recordNameSkolverket
School name changed
From "Tjörns montessori skola och förskola" to "Tjörns montessori skola ekonomiskförening".
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.
2023-06-29
Authority recordLocationSkolverket
Visiting address changed
From "Långekärr 23, 47191 Kyrkesund" to "Långekärr 23, 47190 Kyrkesund".
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.
2023-06-29
Authority recordProgrammesSkolverket
Year levels changed
From "1, 2, 3, 4, 5, 6" to "1, 2, 3, 4, 5".
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.
2019
2019-05-20
Authority recordNameSkolverket
School name changed
From "Långekärrsskolan" to "Tjörns montessori skola och förskola".
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.
2019-04-08
Authority recordContactSkolverket
Contact details changed
From "email: eilhoff@hotmail.se" to "url: http://www.langekarrsskolan.se, email: gabriella@langekarrsskolan.se, phone: 070-9310760".
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.
2019-04-08
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.
2019-04-08
Authority recordNameSkolverket
School name changed
From "Långekärrs skola" to "Långekärrsskolan".
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.
2019-04-08
Authority recordStatusSkolverket
Status changed
From "PLANERAD" to "AKTIV".
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.
2019-04-08
Authority recordLocationSkolverket
Visiting address changed
From "Halsbäcksvägen 64, 47191 KLÖVEDAL" to "Långekärr 23, 47191 KYRKESUND".
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.
2017
2017-08-21
Authority recordLifecycleSkolverket
School started
Skolverket records 2017-08-21 as the start date for this compulsory school operated by Tjörns Montessoriskola Ekonomisk förening, current status AKTIV.
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.

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.

Demography

Pupil forecast — Tjörn

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)1,798

ages 6–15 (2030)1,713

ages 6–15 (2035)1,509

Change 2025→2030-4.7%

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

Tjörn 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	1,567	1,561	1,579	1,608	1,634
Merit value yr 9	224.3	227.1	226.1	227.5	222.3
Eligibility for upper secondary	73.7%	72.6%	75.5%	73.3%	72.0%
Pupils per teacher	10.6	11.2	12.0	11.9	13.0
Cost per pupil	175,456 SEK	175,341 SEK	164,619 SEK	148,644 SEK	140,718 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.

How sources are labelled

Skolkoll separates official statistics, its own processing, and information from a school or provider.

Official/statistical source: Data from an authority, municipality or other published statistical source. Date and source should be shown where possible.Affects score where the method says so
Skolkoll processing: Calculated, normalised or assembled by Skolkoll from published sources. The method should be documented.Affects score where the method says so
School-reported information: Information from the school or provider. It is shown separately and does not affect ranking or Skolkoll score without a published methodology decision.Does not affect score/ranking
Editorial/method text: Explanations, checklists and interpretation support from Skolkoll. This supports further review; it is not an official decision.Does not affect score/ranking

Swedish National Agency for Education (Skolverket)Fetched 5 Jul 2026
Pupil count, qualifications, grades, teacher numbers per school
Skolverket SALSAFetched 3 Jul 2026
Model-based expected results based on pupil composition
Swedish Schools Inspectorate (Skolinspektionen)Fetched 3 Jul 2026
Inspection decisions, remarks, complaints
Statistics Sweden (SCB)Fetched Not available
Fetch date is missing in dataset metadata; no school-register date is used as a substitute.
Population and economic data
KoladaFetched 3 Jul 2026
Municipal key figures, financial data per school form
LantmäterietFetched Not available
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.

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Open data — all schools

Tjörns montessori skola och förskola in Tjörn

Key figures over time

School history

Quick overview

Pupil count: statistics vintage available

Head changed

Qualified teachers changed unusually much

Pupils per teacher: statistics vintage available

Qualified teachers: statistics vintage available

Year levels changed

Contact details changed

Head changed

Operating name started being reported

Operator name changed

School name changed

Visiting address changed

Year levels changed

School name changed

Contact details changed

Head changed

School name changed

Status changed

Visiting address changed

School started

Tjörn municipality — history (school form: compulsory school)

Data sources

Methodology and definitions

Export