No.
Parental consent is not a condition of a lawful after-school detention, and neither, in England, is 24 hours’ written notice — that condition was narrowed to Wales in 2012 and many school policies still repeat it as if it were the law. What the statute does require is that the pupil is under 18, that the head has already made known that out-of-hours detentions may be used, and that the day is a permitted one.
updated 8 Jul 2026last checked 1 Aug 2026
What the source actually says
DfE’s current behaviour guidance says it in one line, under Matters schools should consider when imposing detentions:
“Parental consent is not required for detentions that satisfy the conditions mentioned in ‘What the law allows’.”
— Behaviour in schools, DfE, February 2024, p.21 DfE
Same guidance, on who may impose one at all:
“Teachers have authority to issue detention to pupils, including same-day detentions.”
— ibid., p.20 DfE
The conditions it refers to are in statute. Note the square-bracketed words in (d) — legislation.gov.uk marks text inserted by a later Act that way:
“The additional conditions are— (a) that the pupil has not attained the age of 18, (b) that the head teacher of the school has previously determined, and has made generally known within the school and to parents of registered pupils at the school, that the detention of pupils outside school sessions is one of the measures that may be taken with a view to regulating the conduct of pupils, (c) that the detention is on a permitted day of detention, and (d) that [ F1 , in relation to a pupil at a school in Wales, ] the pupil’s parent has been given at least 24 hours’ notice in writing that the detention is due to take place.”
— Education and Inspections Act 2006, s.92(3), current text as revised legislation
And the amendment note that put those words there:
“F1 Words in s. 92(3)(d) inserted (15.1.2012) by Education Act 2011 (c. 21) , ss. 5 , 82(3) ; S.I. 2012/84 , art. 2”
— ibid., Textual Amendments legislation
So since 15 January 2012 the written-notice condition in s.92(3)(d) has been attached to pupils at a school in Wales. Telling parents is still often the right thing to do, and DfE treats it as a judgement:
“whether parents ought to be informed of the detention. In many cases it will be necessary to do so, but this will depend on the circumstances. For instance, notice may not be necessary for a short after-school detention where the pupil can get home safely”
— Behaviour in schools, DfE, February 2024, p.21 DfE
Your school may still require it
Your school can require more than the law does — 24 hours’ notice as a matter of policy, a parental phone call, a logged reason, a senior sign-off — and you can be directed to follow that. It is a school choice, not a legal condition of the detention.
See also Can support staff issue detentions and sanctions? and Does my school have to have a behaviour policy?.