Which is the best lower-secondary school in Trollhättan?

Strömslundsskolan 7-9 ranks highest among lower-secondary schools in Trollhättan with a Skolkoll score of 64/100 (2025/26). Runner-up is Nordic International School Trollhättan with a Skolkoll score of 63/100.

How many lower-secondary schools are there in Trollhättan?

Trollhättan has 12 lower-secondary schools (schools offering years 7–9), of which 11 have published a Year 9 final-grade score. The municipality average is 228.7 points, 1.1 points above the national average of 227.6 points.

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

The average Year 9 final-grade score in Trollhättan is 228.7 points, compared with a national average of 227.6 points — 1.1 points above 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 Trollhättan

Compare the 11 lower-secondary schools (years 7–9) in Trollhättan ranked by Skolkoll score, with the Year 9 final-grade score as context. Average merit 228.7 points (1.1 points above the national average). Data from Skolverket.

How we ranked

The list contains compulsory schools in Trollhättan 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

11 schools are included. 11 have a displayed Skolkoll score; 0 have no displayed score because the sample or data coverage is too small.

Filter: Compulsory schools in Trollhättan 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: 6 rows have 4-5 real score dimensions, 5 have 2-3, 0 have 1, 0 have 0 or unknown. Average: 3.5 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 10 lower-secondary schools in Trollhättan

Top 10 lower-secondary schools in Trollhättan ranked by Skolkoll score (0–100, higher = better, descending sort).
#	School	Skolkoll score	Year 9 score	SALSA deviation	Cert. teachers	Pupils	Type
1	Strömslundsskolan 7-9	Skolkoll score 64 out of 100. Composite index.	251.2	-8.0	83%	210	Municipal
2	Nordic International School Trollhättan	Skolkoll score 63 out of 100. Composite index.	254.3	+10.0	No data	150	Independent
3	Fridaskolan, Trollhättan	Skolkoll score 58 out of 100. Composite index.	254.4	+19.0	72%	540	Independent
4	Paradisskolan 4-9	Skolkoll score 49 out of 100. Composite index.	239.1	-18.0	No data	400	Municipal
5	Sjuntorpskolan 4-9	Skolkoll score 46 out of 100. Composite index.	228.9	-22.0	73%	320	Municipal
6	Nya Skolan, Trollhättan, Pettersberg	Skolkoll score 45 out of 100. Composite index.	199.2	+42.0	68%	250	Independent
7	Skogshöjdens skola 4-9	Skolkoll score 44 out of 100. Composite index.	218.3	+8.0	74%	280	Municipal
8	Lyrfågelskolan 7-9	Skolkoll score 42 out of 100. Composite index.	238.1	-2.0	55%	410	Municipal
8	Slättbergsskolan 7-9	Skolkoll score 42 out of 100. Composite index.	218.1	+34.0	55%	170	Municipal
10	Sylteskolan 7-9	Skolkoll score 40 out of 100. Composite index.	212.2	+14.0	61%	320	Municipal

Showing top 10 of 11 lower-secondary schools with a Year 9 score in Trollhättan.See all schools →

Trollhättan vs national average

Lower-secondary schools in Trollhättan have an average Year 9 final-grade score of 228.7 points, which is 1.1 points above the national average (227.6 points).

Explore more in Trollhättan

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.