There might be problems using covert participant observation to study pupil subcultures, simply because it would prove very difficult for a researcher to pass themselves off as a pupil
There may be difficulties in using written questionnaires to discover the opinions of parents who are illiterate when studying parental attitudes to schooling
Children and young people generally have less power and status than adults, which makes it more difficult for them to state their attitudes and views openly
Power differences between adult researchers and young participants may remain even when using group interviews rather than formal one-to-one interviews
Pupils who resent the power of teachers over them may be less likely to cooperate with research, but may feel empowered by participating and express their true feelings about school
Pupils' vocabulary, powers of self-expression, thinking skills and confidence are likely to be more limited than those of adults, particularly when trying to express abstract ideas
Limitations in pupils' understanding make it more difficult to gain their informed consent as the sociologist may not be able to explain the nature of the research in words that young pupils can clearly understand
A young person's memory is less developed than that of an adult, so they may be unable to recall in detail relevant material when asked to do so by the researcher
There are age, class and ethnic variations in the kinds of language that pupils use, such as differences in speech codes, so it may be important to match the gender and ethnicity of the young person and the researcher
There are more 'gatekeepers' controlling access to pupils than there are for most other social groups, such as parents, heads, teachers, local authorities and school boards of governors
Child protection laws such as the Safeguarding Vulnerable Groups Act, 2006, require researchers to have Disclosure and Barring Service (DBS) checks, which may delay or prevent researchers from carrying out their research
One advantage of studying pupils is that, because they are legally required to attend school, sociologists will know where to find their target research group
Teachers have more power and status because of their age, experience and responsibility within the school, and the nature of the classroom reinforces their power
Researchers may need to develop a 'cover' if they intend to carry out covert investigations, such as representing themselves as a supply teacher or classroom assistant, which gives them lower status within the school
Teachers may be reluctant to answer certain questions honestly due to concerns about how critical comments could affect their career prospects, but the researcher may be able to overcome this by using observational methods rather than direct questioning
A closed social setting with clear physical and social boundaries, and a highly controlled environment where behaviour may not accurately reflect what those involved really think and feel
Teachers and pupils are very experienced at concealing their real thoughts and feelings from each other - another example of impression management - and they may conceal them from the researcher too
Young people may be insecure about their identity and status, so may be more sensitive to peer pressure and the need to conform when in school-based groups
It may be necessary to supervise pupils when they are filling in questionnaires, especially if this is done in class, in order to prevent peers from influencing one another's answers
May overcome the problem of unrepresentative research, but the researcher may lose the insight that can be gained from detailed observation of a single school
The researcher studying schools would need only a few minutes to identify their research population - all the schools in a particular area - as the state publishes lists of schools, their locations and types