Why do some pupils achieve more than others?

The education system is one of the most influential institutions in society. Some pupils are better than others, it depends of social classes, culture capital, family income, amount of knowledge, attitudes and skills. There are differences in class of society, between working class and upper class, between boys and girls, between ethnic groups.

Social classes.
Pupils of upper class go to special schools , i.e. it can be private school where study only pupils, who's family income is higher than working class. Pupils have pocket money and they never think about work at the moment when they study. Also parents can hire a private tutor or buy different revision guide when their children have problems in education.

Schools for working-class are free, include uniforms, transport to and from school, classroom materials, school textbooks and other neccessary things for education. Working-class children more likely to have to work part time to support their studies. They do it to earn some money because their parents' income is small. Also parents can more easily afford to pay for childcare and it is give affect at the pupils' attendance and performance at school. Pupils are more likely to leave school at the age of 16 and less likely to go to University, because their parents can not pay for the higher education, also children are not interested in higher education because their basic one is poorer than others', and they think they can not have success in education, because parents and teachers do not believe in them.
Culture capital is valuable as material wealth- economical capital, forms of knowledge, values, ways of interacting and communication ideas. Working-class and ethnic minority children may lack this qualities and have not the same chances to succeed. Middle-class mothers had more educational qualifications and they used cultural capital to good effect to helping children with their homework and other school things. Mothers who have the main influence on their children's education and their effectiveness depends on the amount of cultural capital at their disposal, and this depends on their social class.