Qualitative strengths and weaknesses
Validity: Using open questions. Therefore can elaborate.
Low representation and generalisbility. This is because it is a small sample.
Bias: People can lie
Quantitative strengths and weaknesses
High representation and generalisability: large sample
Low validity: not using open questions
Questionnaires strengths and weaknesses
High representation and generalisability. 22,000 people in the sample.
Low validity: participants had difficulty remembering/guessing their activities
Interviews strengths and weaknesses
High validity: open ended questions
Ethics- Choice of schools
- Most pupils achieved regardless of free school meals
- Makes it hard to identify poor children