Önstaskolan in Västerås

Adapted compulsory school, Compulsory school — Year 7–9 in Västerås, Västmanlands län · VÄSTERÅS KOMMUN

6 values has limited history

This applies only to the values listed here.

There is still too little history to interpret the trend safely.

This affects

  • Anti-bullying year 8
  • Cost per student
  • Permanently employed teachers
  • Safety year 8
  • Study environment year 8
  • Number of pupils
  • The school survey relies on voluntary responses and results can vary substantially between years for small samples.
  • Costs are affected by accounting practices, rent levels, and service mix, and should mainly be compared across similar school types.
  • This staffing metric is affected by FTE definitions, local reporting practices, and temporary vacancies.
  • Pupil counts may be privacy-suppressed for small units and are not always updated on the same cadence as other indicators.

Other values here do not have this specific note.

Read more about the method →
Skolkoll score: 45 of 100 Improving How is it calculated?
This school performs below average
430 pupils 66% qualified teachers Merit 222 11.9 pupils/teacher Grade deviation +0.1
Quality dimensions
Results 44
Staff 27
Value-added 50
Safety 64
Resources 51

Önstaskolan is a compulsory school in Västerås, Västmanlands län. The school has 430 pupils and 11.9 pupils per teacher. Average merit value in year 9 is 222 points. 66% of teachers are qualified. Provider The organisation that runs the school — a municipality, foundation or limited company.Read more in glossary → : Västerås kommun.

Statistics: school year 2023/24. Source: Skolverket, SCB, Kolada. Glossary · About the data.

Result history: 5 years
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Visits

Open house and visiting days

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Dates are added from school-provided or editorially verified sources after manual review.

Warning signals

Objective assessment based on statistics — not a quality stamp. Glossary.

No warning signals

School signal summary

Below average
compared to national averages
Merit value yr 9
222 ↑
National: 227.7 Municipality: 217.8
Pupils/teacher
11.9 →
National: 12.1 Municipality: 12.9
Qualified teachers
66% ↓
National: 74.0% Municipality: 69.2%
Eligible for upper secondary
75.6% ↑
National: 86.1%
School National Municipality

School profileSchool strengths and profile

School's strengths compared to all compulsory schools nationally. Source: Skolverket, Schools Inspectorate. Method.

Radar chart: school profile across five dimensions ResultsStaffSafetyResourcesTrend

Percentile ranking

School's position among all compulsory schools in Sweden.

Merit score P44
Qualified teachers P27
Teacher density P51
Upper secondary eligibility P19

Safety index

64 /100
Safety 77%
Study environment 54%
Anti-bullying 52%
Staff 65%

Cost per pupil The municipality’s total cost for compulsory school per student per year. Ranges from under SEK 100,000 to over SEK 200,000.Read more in glossary → — Västerås

Municipality average cost per pupil. Source: Kolada.

136,647 SEK Total cost/pupil National avg: 142,155 SEK
76,401 SEK Teaching
24,834 SEK Facilities
7,120 SEK Meals
9,018 SEK Learning materials
4,363 SEK Student health

Municipal schools: 138,663 SEK/pupil.

Student support services Collective term for the school’s medical, psychological, psychosocial, and special-educational services.Read more in glossary → in Västerås

Municipality-level data on student health and support resources. Source: Kolada and the Schools Inspectorate.

Student health, compulsory school
4,363 SEK/pupil (national: 5,053 SEK)
Easy access to student health, yr 5
63.7%
Easy access to student health, yr 8
54.8%
Support from student health (staff)
82.9%
Preventive work (staff)
77.6%

View all key figures for Västerås · Source: Kolada

After-school care in Västerås

Municipality-level key figures for after-school care (fritidshem) in Västerås. The data covers the entire municipality and may differ from this specific unit.

Children per FTE
20.6 (national: 21.6)
Pedagogical higher education
25.7% (national: 36.7%)
Cost per child
46,302 SEK/year (national: 46,712 SEK)
Enrolment rate (age 6-12)
56% (national: 57.9%)
Enrolled children in municipality
7,572

View all key figures for Västerås · Source: Kolada

Student forecast — Västerås

Population forecast for children ages 6–15 in Västerås. Source: SCB.

19,263 ages 6–15 (2025)
18,553 ages 6–15 (2030)
17,186 ages 6–15 (2035)
-3.7 % Change

Staff & stability

Staff stability and qualification data, shown first at school level and then at municipality level.

This school

Indicator based on the share of permanently employed, senior and qualified teachers. The school has high staff stability.

High
Permanently employed
89.1%
Senior teachers
9.1%
Qualified teachers
66%

Teacher turnover: 11.2% — share of teachers who left or joined during the year

Municipal average qualified teachers: 69.2% (national: 74%).

A high share of permanently employed and qualified teachers indicates a more stable staff situation. Source: Skolverket Statistical Database.

Municipality

How stable the teaching workforce is in the municipality, measured as the trend in the share of qualified teachers over time. Municipality-level data from Kolada. School-specific trend is shown above under This school.

Qualified teachers The proportion of teachers with a teaching licence and qualification in the subjects they teach.Read more in glossary → — Västerås (2025)
66.3% (national: 73.3%)
Qualification trend (2020–2025)
↑ +1.8 percentage points (improving)
Pupils per teacher — Västerås
11.8 (national: 11.9)

Trend: qualified teachers in Västerås (%)

2020: 64.5% 2025: 66.3%

All staff data for Västerås

Merit value The sum of a student’s 16 best grades in year 9, max 320 points (340 with modern languages). The national average is around 225–230.Read more in glossary → vs. expected ( SALSA A statistical model that compares schools’ results with what is expected given the student composition.Read more in glossary → )

SALSA compares the school's actual merit value with a modelled value based on pupil composition. School year 2024/25.

222 Actual merit value
222 Modelled value
0.0 (expected: 0) School's own contribution (2024/25)

Municipality avg. (Västerås): -4.9

−60 0 +60
✓ High certainty Standard uncertainty: ±0.7 points (430 pupils)
Large school — the SALSA score is statistically stable.

SALSA measures relative performance — not absolute school quality. The model explains approx. 53% of variation; the rest depends on factors like leadership, teaching, resources and pupil selection not captured by the model.

Background variables in the model
Parents' education level
2.3 (scale 1-3)
Recently immigrated pupils
3%
Share of boys
56.0%
Pass in all subjects
61% (model: 69%, score: -8)

SALSA score over time

2020/21: +7.0 2024/25: 0.0

Positive SALSA score = higher results than expected given pupil composition. Source: SIRIS/Skolverket. Read more about SALSA.

Similar schools

The 5 most similar compulsory schools based on pupil count, geography, teacher qualifications and pupil composition.

Internationella Engelska Skolan Västerås
Västerås
Merit: 233.8 460 pupils
5 km away 94% similarity
Noblaskolan Hemdal
Västerås
Merit: 201.7 Qual: 69.8% 460 pupils
4 km away 93% similarity
Skiljeboskolan
Västerås
Merit: 206 Qual: 65.3% 360 pupils
5 km away 92% similarity
Parkskolan
Hallstahammar
Merit: 222.5 Qual: 70% 480 pupils
18 km away 91% similarity
Mälarparksskolan
Västerås
Qual: 59.4% 380 pupils
6 km away 90% similarity

Schools with similar pupil composition

Schools with similar SALSA background variables (parents' education, recently immigrated, gender). Shows how Önstaskolan performs compared to schools with similar conditions.

0.0 Performs as expected

Better SALSA score than 9 of 15 comparison schools

Average SALSA score among comparison schools: -0.3

School Municipality Merit value SALSA score Qualified teachers
Önstaskolan Västerås 222 0.0 66%
Änge skola 7-9 Krokom 235 +14.0 60.3%
Minnebergsskolan Arvika 208 -10.0 74.4%
Gottsundaskolan Uppsala 229 +3.0 71.9%
Österslättsskolan Karlshamn 208 -15.0 82.5%
Sammilsdalskolan F-9 Leksand 227 +5.0 74.6%
Vendelsömalmsskolan Haninge 214 -5.0 76.3%
Högbyskolan Gotland 238 +16.0 54.6%
Fryxellska skolan Sunne 203 -19.0 68%
Vasavångsskolan 7-9 Eslöv 221 -3.0 85.2%
Tullbroskolan Falkenberg 218 -3.0 75.9%
Malmaskolan 4-9 Köping 208 -17.0 76.6%
Rudenschöldskolan Lidköping 213 -12.0 88.8%
Hästhagsskolan Stockholm 249 +27.0 77.3%
S:t Olofs skola Sigtuna 241 +16.0 64%
Vislandaskolan Alvesta 223 -1.0 65%

SALSA score = actual merit value minus SALSA model's expected value. Positive (green) = better than expected. Source: SIRIS/Skolverket. School year 2024/25.

Student throughput The proportion of upper secondary students who graduate within three years. An important quality measure for upper secondary schools.Read more in glossary →

Proxy: difference in pass rate (all subjects) year 6 vs year 9.

157 Pupils yr 9
-10.3 pp Pass rate yr 6 vs 9
75.6% Upper secondary eligibility National avg: 86% (national: 86.1%)

Pupils per year group

Year 7
136
Year 8
136
Year 9
157

Statistics

Number of pupils
430 Limited historyThere is still too little history to interpret the trend safely.This affectsNumber of pupilsPupil counts may be privacy-suppressed for small units and are not always updated on the same cadence as other indicators.Read more about the method →
Pupils per teacher
11.9 (municipal avg: 12.9, national: 12.1)
Qualified teachers
66% (municipal avg: 69.2%, national: 74%)
Merit value yr 9
222 (municipal avg: 217.8, national: 227.7)
Eligible for vocational upper secondary yr 9
75.6% (national: 86.1%)
NP Swedish yr 9
13.1%
NP English yr 9
15.5%
NP Mathematics yr 9
10.2%
School library
No

Quality dataQuality and finance (Skolverket Statistical Database)

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

Costs per pupil

Total cost
137,900 SEK Limited historyThere is still too little history to interpret the trend safely.This affectsCost per studentCosts are affected by accounting practices, rent levels, and service mix, and should mainly be compared across similar school types.Read more about the method →
Teaching
77,200 SEK
Facilities
23,900 SEK
Meals
7,000 SEK
Learning materials
8,300 SEK
Student health
4,430 SEK

Personnel

Special needs teachers qualified
27.2%
Permanently employed
89.1% 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
9.1%
Teacher turnover The proportion of staff replaced during a year. High staff turnover may indicate instability or recruitment difficulties.Read more in glossary →
11.2%
Pupils per counsellor
1183.2
Certified in subject(s)
63.5% (licensed and certified for teaching subject)
Teachers (FTE)
1,077.6
Share of female teachers
78.2%

School survey — radar chart

Student responses across 5 dimensions. Grey area = national average. What does the survey measure?

SafetyStudy environmentAnti-bullyingStimulationSupport
Safety 81% -0.8 pp
Study environment 57% +0.5 pp
Anti-bullying 62% -3.1 pp
Stimulation 65% -0.9 pp
Support 74% +0 pp
Avg 68%

NKI trend over time (Pupils year 8)

NKI per year (0–10): the "nojdhet" dimension when present, otherwise the average of all survey dimensions. What does the survey measure?

6.5 2023 5.8 2025
Falling (-0.7 on 0–10)

Demographics & safety

Pupil demographics

Foreign background
33.3%
Gender
56.0% boys, 44.0% girls
Recently immigrated pupils
3% (SALSA model)
Other mother tongue than Swedish
38.8% (municipality avg.)
Swedish as a second language
19% (municipality avg.)
Parents with higher education
62.4%

Safety in the municipality

Reported crimes at municipality level — not school-specific. Source: Kolada.

Reported crimes (total)
14,153 per 100,000 pop.
Violent crimes
1,030 per 100,000 pop.
Burglaries
403 per 100,000 pop.
Drug offences
2,002 per 100,000 pop.

Contact & AboutAbout the school

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View contact details on Skolverket

Result tracking

Eligible for upper secondary
75.6% (national: 86.1%)

Postal address

72187 VÄSTERÅS

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About data and sources

Statistics are sourced from Skolverket, Kolada/RKA and SCB. Latest known data update: . Empty values mean the data is missing at source or not applicable to this school type.

School unit code
84998800
School forms
Adapted compulsory school, Compulsory school
Year span
7–9
School provider
Västerås kommun
Organisation number
2120002080
Provider type
Municipality
Municipality
Västerås
County
Västmanlands län
Legal form
Municipality
Principal
Vlora Sudjada

For definitions and methodology: method, data sources and glossary.

Hamreskolan Compulsory school, Preschool class, After-school care · 410 pupils Rönnbyskolan Compulsory school, Preschool class, After-school care · 450 pupils · Merit 221.9 Internationella Engelska Skolan Västerås Compulsory school, Open leisure-time activities · 460 pupils · Merit 233.8 Noblaskolan Hemdal Compulsory school, Preschool class, After-school care · 460 pupils · Merit 201.7 Skälbyskolan Compulsory school, Preschool class, After-school care · 400 pupils · Merit 230.8 Ekbergaskolan Compulsory school, Preschool class, After-school care, Adapted compulsory school · 380 pupils See all compulsory schools in Västerås
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Related

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Compulsory schools in VästeråsSee all compulsory schools in the municipality with results and comparisons.Schools in VästeråsOpen the municipality page with all schools, rankings, and local aggregates.Västerås kommunSee all schools, municipalities, and core metrics for the same provider.Västmanlands länCompare municipalities and school patterns across the whole county.Merit value year 9Compare year-9 merit values across municipalities and school environments.Certification vs Merit valueSee how merit values and upper-secondary eligibility move together.Compare schoolsBuild a side-by-side comparison with the schools you care about.

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Last updated: Source: Skolverket, SCB, Kolada

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Statistics: school year 2023/24. Source: Skolverket, SCB, Kolada. Glossary · About the data.
— = data not available from source.