Interpretation guides

Short, precise guides explaining how to interpret key metrics and data points on Skolkoll.

Merit value (meritvärde) How to interpret merit value in year 9 — calculation, limitations and common misconceptions. When SALSA is misleading The SALSA score is a powerful tool, but it can be misleading. Here is how to know when to be cautious. Response rate in the school survey The school survey response rate determines how reliable the results are. Here is how to assess whether the figures can be trusted. Teacher certification What teacher certification actually measures, why it is not the same as teaching quality, and how to interpret the figure. Statistical confidentiality — why data is missing Is a school missing data? It is usually due to statistical confidentiality, not poor results. Here is how Skolverket's rule works. Small schools — unstable figures Schools with few students have statistically unstable averages. A single student can shift the mean by several percentage points. School unit vs provider vs group What is the difference between a school unit, provider and school group? How they relate and what the figures show at each level.