Sibling Priority Admission Appeals

Each school defines ‘sibling’ in its own admission arrangements

Most schools give higher priority to a child with an older brother or sister already attending (or due to attend) at the time of admission - but exactly who counts as a sibling is set out in the school’s own published admission arrangements, not a single national definition. Some definitions include step-siblings, half-siblings, or children living in the same household who aren’t related by blood; others are narrower.

Where disputes usually arise

• Whether a step-sibling or half-sibling living in a different household counts under this school’s specific definition
• Whether the sibling will genuinely still be on roll at the school at the time the younger child would be admitted
• Whether the sibling relationship was clearly evidenced at the time of application

What strengthens this ground

The school’s own published sibling definition, set directly against your actual family circumstances and proof of the relationship and shared address. If your situation clearly meets the published definition and wasn’t recognised, that’s a concrete, checkable point for the panel - much stronger than arguing the definition itself should be different.

Where it tends to fail

Arguing that a sibling definition is unfair, rather than that it was misapplied to your specific circumstances, is a weak version of this ground - panels are checking whether the published policy was correctly applied, not re-writing the policy itself.

Common mistakes parents make with this ground

• Assuming the school’s definition of ‘sibling’ matches what you’d expect, rather than reading the actual wording in its published admission arrangements
• Not confirming, in writing, that the older child will still be on the school’s roll on the date the younger child would actually start
• Submitting the sibling relationship as a bare assertion, without the evidence the school’s own arrangements ask for - proof of address, birth or adoption certificates, or evidence of a step- or half-sibling relationship
• Treating sibling priority as an automatic guarantee, rather than one criterion that only helps once you know where it sits in the school’s actual oversubscription order

Evidence that helps this ground

A copy of the school’s published sibling definition from its admission arrangements for the relevant year, alongside proof of the relationship and shared address - a birth certificate, adoption order, or other document the school’s own policy accepts. If the definition covers step- or half-siblings, evidence of the household relationship (not just a shared surname) is what actually does the work.

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