Postal address
Box 1565, 17129 SOLNA
Mellansjö skola in Täby
After-school care, Compulsory school — Year 1–9 in Täby, Stockholms län · Ambea AB ( publ )
Declining How is it calculated?
This school performs below average
80 pupils 46.6% qualified teachers
Merit 166.3 5.6 pupils/teacher 2 warning signals
Quality dimensions
Results 2
Staff 5
Value-added 0
Safety 69
Resources 97
Mellansjö skola is a compulsory school in Täby, Stockholms län. The school has 80 pupils and 5.6 pupils per teacher. Average merit value in year 9 is 166.3 points. 46.6% of teachers are qualified. Provider The organisation that runs the school — a municipality, foundation or limited company.Read more in glossary → : Nytida Enigma AB ( group A group of companies with a common parent company that runs independent schools.Read more in glossary → : Ambea AB ( publ )).
Statistics: school year 2023/24. Source: Skolverket, SCB, Kolada. Glossary · About the data.
Result history: 5 years Pro trial
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Data
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Visits
Open house and visiting days
Verified dates for visiting this school.
No verified open house dates are registered yet.
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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.
Low share of qualified teachers 47%
47% qualified teachers — significantly below the national average (74%).
SALSA underperformance -62.0
Merit value is 62 points lower than expected given pupil composition (SALSA score: -62.0).
School signal summary
Below average
compared to national averages Merit value yr 9
166.3 ↓
National: 227.7 Municipality: 253.3
Pupils/teacher
5.6 →
National: 12.1 Municipality: 14.9
Qualified teachers
46.6% ↓
National: 74.0% Municipality: 75.7%
School National Municipality
School profileSchool strengths and profile
School's strengths compared to all compulsory schools nationally. Source: Skolverket, Schools Inspectorate. Method.
Percentile ranking
School's position among all compulsory schools in Sweden.
Merit score P2
Qualified teachers P5
Teacher density P97
Safety index
69 /100
Safety 79%
Study environment 58%
Anti-bullying 57%
Staff 81%
Company dataProvider and inspection
Inspection and review (Schools Inspectorate)
Decisions and reviews from the Schools Inspectorate.
Full inspection decisions are available from the Schools Inspectorate.Search at skolinspektionen.se
Search inspection records
The Schools Inspectorate (Skolinspektionen) is responsible for supervision and quality reviews of schools in Sweden.
Search for Mellansjö skola at the Schools Inspectorate
Full inspection decisions, injunctions and quality reviews are available from the Schools Inspectorate.
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 → — Täby
Municipality average cost per pupil. Source: Kolada.
123,225 SEK Total cost/pupil National avg: 142,155 SEK
71,092 SEK Teaching
20,171 SEK Facilities
6,517 SEK Meals
4,182 SEK Learning materials
4,378 SEK Student health
Municipal schools: 127,861 SEK/pupil. This school is run by an independent provider and receives a pupil allowance from the municipality.
Student support services Collective term for the school’s medical, psychological, psychosocial, and special-educational services.Read more in glossary → in Täby
Municipality-level data on student health and support resources. Source: Kolada and the Schools Inspectorate.
View all key figures for Täby · Source: Kolada
After-school care in Täby
Municipality-level key figures for after-school care (fritidshem) in Täby. The data covers the entire municipality and may differ from this specific unit.
View all key figures for Täby · Source: Kolada
Student forecast — Täby
Population forecast for children ages 6–15 in Täby. Source: SCB.
10,344 ages 6–15 (2025)
9,784 ages 6–15 (2030)
9,180 ages 6–15 (2035)
-5.4 % 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 moderate staff stability.
Medium
Teacher turnover: 5.3% — share of teachers who left or joined during the year
Municipal average qualified teachers: 75.7% (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.
Trend: qualified teachers in Täby (%)
2020: 72.3% 2025: 74.7%
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. Small school — the SALSA score may vary significantly between years.
166 Actual merit value
228 Modelled value
-62.0 (expected: 0)
School's own contribution (2024/25)
Municipality avg. (Täby): +3.0
−60 0 +60
⚠ Low certainty
Standard uncertainty: ±1.7 points
(80 pupils)
Small schools (<100 pupils) have high uncertainty — the SALSA score may vary significantly between years.
Small schools (<100 pupils) have high uncertainty — the SALSA score may vary significantly between years.
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. Independent schools with selective admissions may show higher SALSA scores without necessarily better teaching.
Background variables in the model
SALSA score over time
2020/21: -74.0 2024/25: -62.0
Small school — year-to-year variation may be statistical noise rather than real change.
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.
Schools with similar pupil composition
Schools with similar SALSA background variables (parents' education, recently immigrated, gender). Shows how Mellansjö skola performs compared to schools with similar conditions.
-62.0 Performs below expectations
Better SALSA score than 0 of 15 comparison schools
Average SALSA score among comparison schools: +5.9
| School | Municipality | Merit value | SALSA score | Qualified teachers |
|---|---|---|---|---|
| Mellansjö skola | Täby | 166 | -62.0 | 46.6% |
| Ursviksskolan | Skellefteå | 220 | -9.0 | 76.5% |
| Östra skolan | Falun | 230 | +5.0 | 56.4% |
| Nyckelskolan | Södertälje | 235 | +9.0 | 79.6% |
| Lysingskolan | Ödeshög | 222 | -7.0 | 57.5% |
| Västra Stenhagenskolan | Uppsala | 242 | +15.0 | 85.1% |
| JENSEN grundskola Bro-Mälarstrand | Upplands-Bro | 265 | +30.0 | 70.8% |
| Assaredsskolan | Göteborg | 232 | +5.0 | 75.1% |
| Ekhamraskolan | Mariestad | 220 | -9.0 | 63.3% |
| Vittra Kungshagen | Nyköping | 234 | +1.0 | 77.6% |
| Vittra Örebro | Örebro | 241 | +15.0 | 48.2% |
| Lyckeby kunskapscentrum F-9 | Karlskrona | 225 | -7.0 | 65% |
| Skärgårdsstadsskolan | Österåker | 217 | -11.0 | 86% |
| Friskolan Lust & Lära | Bollnäs | 233 | +7.0 | 73.5% |
| Änglagårdskolan | Göteborg | 236 | +3.0 | 67.1% |
| Jönsbergska Idrottsskolan Norrköping | Norrköping | 276 | +41.0 | 79.4% |
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.
11 Pupils yr 6
8 Pupils yr 9
Pupils per year group
How do the pupils feel? ( School survey The Schools Inspectorate’s survey sent to pupils, parents, and staff about safety, classroom order, and teaching.Read more in glossary → )
Results from the Schools Inspectorate's survey.
Share of pupils who fully or partly agree (0–100%). National average shown in brackets where available.
Trends over time
Data changes
Statistics
Extended statisticsDetailed results
Quality dataQuality and finance (Skolverket Statistical Database)
Costs, personnel data and school survey results from Skolverket's quality system.
Personnel
School survey — radar chart
Student responses across 5 dimensions. Grey area = national average. What does the survey measure?
Safety 90% +8.2 pp
Study environment 52% -4.5 pp
Anti-bullying 73% +7.9 pp
Stimulation 66% +0.1 pp
Support 81% +7 pp
Avg 72%
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?
Stable (+0.0 on 0–10)
Demographics & safety
Pupil demographics
Safety in the municipality
Reported crimes at municipality level — not school-specific. Source: Kolada.
Contact & AboutAbout the school
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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.
For definitions and methodology: method, data sources and glossary.
Compare
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Geographically nearest schools of the same type, regardless of municipality.
Compare these schoolsSchools of the same type in Stockholms län with similar pupil counts.
Compare similar schoolsSee how the school compares from a national perspective.
Related
Keep exploring this school through its provider, group, municipality, and the most relevant statistics pages.
Compulsory schools in TäbySee all compulsory schools in the municipality with results and comparisons.Schools in TäbyOpen the municipality page with all schools, rankings, and local aggregates.Nytida Enigma ABSee all schools, municipalities, and core metrics for the same provider.Ambea AB ( publ )Open the full school-group page with providers, municipalities, and group totals.Stockholms 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.School size by school typeSee how school forms and unit sizes are distributed nationally.
Documents from the Schools Inspectorate
School libraries in the municipality
Municipal average from the National Library's school library statistics (2024).
School meals
Weekly menus and meal provider for this school's municipality.
No menu provider registered for this municipality yet.
Source: municipality's own meal portal — Skolnavigator does not host menu content.
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Statistics: school year 2023/24. Source: Skolverket, SCB, Kolada.
Glossary · About the data.
— = data not available from source.
