Neda Kristanova, director of the Centre for Assessment in School and Pre-School Education, said that "the influence of socio-economic environment and status is stronger than the average of the countries, which shows that there is still room for improvement in our education system in terms of equal access to quality education for all students".

The most important thing is that knowledge is used in life and that parents' involvement in education and reading plays a key role in students' performance," said Education Minister Galin Tsokov.