What is the difference between an academy, a free school and a grammar school?
Three different things frequently confused, because two describe governance and one describes selection.
The governance categories:
Maintained school. Funded and overseen by the local authority, following the national curriculum and national pay and conditions.
Academy. Funded directly by central government through a funding agreement with a trust, which is a charitable company. Academies have more freedom over curriculum, staff pay and conditions, and term dates. Most are part of a multi-academy trust running several schools, and the trust — not the individual school — is the legal entity, employer and accountable body.
Schools become academies either by choice (converter) or by direction following poor performance (sponsored).
Free school. An academy that was newly established rather than converted — set up in response to a proposal from a group such as parents, teachers, a charity or an existing trust. Legally and operationally they are academies; the term describes their origin.
The selection category:
Grammar school. A state school that selects by academic ability, using the eleven-plus. A grammar school may be maintained or an academy — the two categories are independent, which is why the terms are not alternatives.
No new grammar schools may be established under current law, though existing ones may expand, and they remain concentrated in particular areas.
Others you will encounter: voluntary aided and voluntary controlled schools, usually with a religious character and differing in who employs staff and controls admissions; studio schools and university technical colleges, specialised academies; and independent schools, privately funded and outside all of this.
What actually differs for parents:
Admissions authority — who sets and applies the criteria, and therefore who you appeal to.
Complaints route. Maintained school complaints can reach the local authority; academy complaints go to the trust and then to the Education and Skills Funding Agency.
Curriculum freedom, in principle more than in practice.
Term dates and school day, which academies may set themselves.