Which is the best lower-secondary school in Österåker?

Skärgårdsstadsskolan ranks highest among lower-secondary schools in Österåker with a Skolkoll score of 67/100 (2025/26). Runner-up is Tråsättraskolan with a Skolkoll score of 60/100.

How many lower-secondary schools are there in Österåker?

Österåker has 10 lower-secondary schools (schools offering years 7–9), of which 8 have published a Year 9 final-grade score. The municipality average is 226.8 points, 0.8 points below the national average of 227.6 points.

How do lower-secondary schools in Österåker compare with the national average?

The average Year 9 final-grade score in Österåker is 226.8 points, compared with a national average of 227.6 points — 0.8 points below the national average.

What is the difference between compulsory school and lower-secondary school?

Compulsory school (grundskola) is the full mandatory Swedish school system from reception class through Year 9. Lower-secondary (högstadium) is the last three years — Years 7–9. A lower-secondary school is a compulsory school that offers Years 7–9, either as part of a reception-class-to-9 unit (F-9) or as a stand-alone 7-9 school.

Best lower-secondary schools in Österåker

Compare the 8 lower-secondary schools (years 7–9) in Österåker ranked by Skolkoll score, with the Year 9 final-grade score as context. Average merit 226.8 points (0.8 points below the national average). Data from Skolverket.

How we ranked

The list contains compulsory schools in Österåker that offer Years 7–9 (both F-9/1-9 units and stand-alone lower-secondary schools) and have published a Year 9 final-grade score. Schools are sorted on the Skolkoll score, the same 0–100 measure shown on school pages — it combines results, staffing, value-added, safety and resources. Where a dimension lacks school-specific data the neutral value 50 is used. The SALSA deviation is also shown separately as context. For compulsory schools, the SALSA residual is part of the value-added score dimension when available, but it is not a standalone quality grade.The Year 9 score, teacher certification and pupil counts are shown so you can read the ranking in context.

Note: "Best" here is a data-driven comparison based on public statistics — not necessarily the best school for your child. Location, pedagogical profile, well-being and pupil composition also matter. Read the full methodology →

Data coverage and sorting

8 schools are included. 8 have a displayed Skolkoll score; 0 have no displayed score because the sample or data coverage is too small.

Filter: Compulsory schools in Österåker that offer Years 7-9 and have a published Year 9 final-grade score.
Sorting: Descending by Skolkoll score. Displayed ranks use rounded-score competition ranking so sub-point differences are not overstated.
Score weights: Results 30%, staff 25%, value-added/SALSA 20%, safety 15%, resources 10%. Missing school-specific dimensions use the neutral value 50.
Coverage: 8 rows have 4-5 real score dimensions, 0 have 2-3, 0 have 1, 0 have 0 or unknown. Average: 4.1 of 5 dimensions.
Sources: Skolverket, Swedish Schools Inspectorate, Statistics Sweden, Kolada and SALSA where available. SALSA year: 2024/25.
Latest data year: 2025/26

Top 8 lower-secondary schools in Österåker

Top 8 lower-secondary schools in Österåker ranked by Skolkoll score (0–100, higher = better, descending sort).
#	School	Skolkoll score	Year 9 score	SALSA deviation	Cert. teachers	Pupils	Type
1	Skärgårdsstadsskolan	Skolkoll score 67 out of 100. Composite index.	248.5	-11.0	86%	390	Municipal
2	Tråsättraskolan	Skolkoll score 60 out of 100. Composite index.	250.3	+1.0	77%	420	Municipal
3	Solskiftesskolan	Skolkoll score 59 out of 100. Composite index.	227.6	-8.0	83%	390	Municipal
4	Söraskolan	Skolkoll score 53 out of 100. Composite index.	227.4	-11.0	78%	510	Municipal
5	Akers Friskola	Skolkoll score 52 out of 100. Composite index.	261.7	+26.0	50%	240	Independent
6	Fredsborgskolan	Skolkoll score 49 out of 100. Composite index.	236.9	-6.0	70%	840	Independent
7	Ljusterö skola	Skolkoll score 47 out of 100. Composite index.	229.2	No data	45%	110	Municipal
8	Helleborusskolan Österåker	Skolkoll score 19 out of 100. Composite index.	132.8	-64.0	53%	160	Independent

Österåker vs national average

Lower-secondary schools in Österåker have an average Year 9 final-grade score of 226.8 points, which is 0.8 points below the national average (227.6 points).

Explore more in Österåker

About the author

Markus Reimer founded Skolkoll to make Swedish school data easy to compare. Skolkoll is operated by Skolspegeln AB — no advertising and no sale of data; data is treated the same for all providers. Full transparency disclosure on About Skolkoll.

Source: Skolverket. The final-grade score is the average Year 9 grade points, 2025/26. The SALSA deviation refers to 2024/25.