The pie chart illustrates the findings of a survey conducted in 2011, detailing the various factors contributing to unsatisfactory learning outcomes within schools in an unspecified country.
Overall, the data reveals that unskilled teachers were the most significant factor, while inadequate facilities and insufficient revision played the least prominent roles in the observed poor learning outcomes.
As the chart indicates, unskilled teachers accounted for 35% of the causes, representing the largest single portion. The influence of upbringing constituted the second largest factor, contributing 27% to the overall problem. The impact of working parents was also notable, registering at 20%.
In contrast, poor facilities were responsible for only 10% of the poor learning outcomes, while a lack of revision accounted for the smallest proportion, at just 8%. These two factors appear to have had a comparatively minor impact on the overall educational performance in the surveyed schools.
