1.economically deprived communities

e.g. There are some economically deprived communities in large cities.

2. clear link, levels of attainment

e.g. There is no clear link between grouping students by ability and their levels of attainment.

3. physical conditions, boost sb's. confidence, academic performance

e.g. We should recognise the importance of the PE class, as it improves students' physical conditions and boosts their confidence.

e.g. While academic performance is highly valued, we should not lose sight of the importance of students' physical conditions.