There is a significant achievement gap between those eligible for free school meals and the rest, with around 60% of pupils not eligible for FSM getting 5 GCSEs at A*-C, compared with 33% of those who were eligible
The achievement gap might even understate the differential achievement as pupils from higher-income households are also more likely to take the more challenging EBacc subjects at GCSE
IQ tests are unreliable and invalid measures of intelligence, as they primarily test knowledge of the style of questions asked and can be improved through practice
Sociologists seek to explain class differences in educational achievement as being a result of either in-school (internal) factors or out-of-school (external) factors, which can be further divided into material and cultural explanations
Material deprivation, such as the inability to afford basic resources, poor diet and under-nourishment, and the need to undertake employment alongside studies, can negatively impact educational performance
Poor diet, under-nourishment, lack of access to educational resources like the internet and books can affect educational performance and lead to underachievement
Working-class pupils are more likely to need to undertake employment alongside their studies to bring in more income, which can seriously impact their educational performance
Some cultural factors like immediate gratification and lack of focus on social mobility may be a reaction to or result of material factors rather than cultural deprivation
The different ways people communicate, with middle-class pupils able to use the 'elaborate code' used in formal situations, while working-class pupils tend to use the 'restricted code'