IES focuses on high standards for academic performance, which is reflected in the national tests, where the percentage of students with top grades (A–C, or C+ as expressed internationally) on the 9th grade national test have been higher year after year than the national average, but also higher than for other independent schools. IES students are achieving the anticipated top scores in English as well as significantly better scores than the Swedish school average in mathematics and Swedish.
The grade point average (meritvärde – one of the performance indicators of the Swedish National Agency for Education) at the end of the 9th grade of compulsory school in spring 2015 was 265 points for IES, compared to the national average of 225 points. IES demonstrates a significant positive academic effect, which means that the academic results exceed the predictions of the authorities based on statistical links between socioeconomic backgrounds of the students and expected academic results.
Of the students attending IES compulsory schools in spring 2015, 98 percent achieved grades that qualify them for upper secondary school. The corresponding percentage for all 9th graders in Sweden was 86 percent. Broken down into higher education preparatory programs indicates the following:
- 96 percent qualified to apply for the Natural Sciences program, compared to the national average of 83 percent.
- 98 percent qualified to apply for the Arts program, compared to the national average of 85 percent.
- 96 percent qualified for the Social Science program, the Humanities program and the Business Management and Economics program, compared to the national average of 83 percent.