Parent's Education level influencing kids Math grade

The Programme for International Student Assessment (PISA) is a triennial international survey which aims to evaluate education systems worldwide by testing the skills and knowledge of 15-year-old students.
Around 510,000 students completed the assessment in 2012, representing about 28 million 15-year-olds in the schools of the 65 participating countries and economies.With mathematics as its primary focus, the PISA 2012 assessment measured student capacity to reason mathematically and use mathematical concepts, procedures, facts and tools to describe, explain and predict phenomena. The PISA assessment also included questions about students' engagement, drive and self-beliefs.

Parent's Education level influencing kids Math grade visualizes student's Mathematics score for each country based upon parent's ISCED level:

In fact researches have shown that parents with a educated background have a much easier time preparing their children for school compared to parents lacking this background. The education that children receive is very much dependent on the education that their parents received when they were children. Researches show that the literacy of their parents strongly affects the education of their children.

The results show a possible correlation between parent's ISCED level having an influence on student's Mathematics grade.

Visualization based upon parents education level :