TIMSS 2023
Average Mathematics Achievement and Scale Score Distributions
Created by the Boston College TIMSS team
The TIMSS 2019 fourth grade mathematics assessment was based on a comprehensive assessment framework developed collaboratively with the participating countries to reflect their curricular goals. The fourth grade mathematics assessment included three content areas—number, which included prealgebra (50%); measurement and geometry (30%); and data (20%). In accordance with the framework, the majority of TIMSS 2019 mathematics items assessed fourth grade students’ applying and reasoning skills. To cover the framework at the fourth grade, the TIMSS 2019 mathematics assessment comprised 175 assessment items.
Exhibit 1.1: Average Mathematics Achievement and Scale Score Distributions
Country
Average
Scale Score
5th
Percentile
25th Percentile
95% Confidence Interval (±2SE)
75th Percentile
95th Percentile
