I'm impressed that Foucault is being taught at that level of education - we hear so much about students leaving school with poor numeracy and literacy skills, and also without much training in critical thinking, so a good dose of French post-structuralism should give their critical faculties a good work-out
I think 16-17yr olds are impressionable adolescents,BTW.
It is worth knowing that Foucault advocated, with others, for the decriminalisation of all 'consensual' sexual relations between adults and children. This fact is significant when assessing Foucault's analysis of power, including the power of adults over children.
It doesn't automatically mean that he was wrong, or should be cancelled, or 16 or 17 year olds shouldn't study him, but it is valid to add to the critical analysis of a theory the way in which the lived experience of the theorist may have influenced, or been influenced by, the material being studied.
As I write that, I'm beginning to think that that is quite an advanced level of analysis for 16 or 17 year olds, and maybe it would be better to focus on generic skills of critical thinking and analysis, which they can then carry forward into future, more detailed studies of writers like Foucault if they go on to university and take courses that include post-structuralist theory?