Greenfields Junior School is a community school located in Hook, within the Hampshire local authority. The school plays an important role in the local community and forms part of the state funded education system in England.

The school educates mixed pupils aged 7 to 11. It currently has 297 pupils on roll with space for 330, offering a broad curriculum across all primary year groups.

The most recent Ofsted inspection, published on 14 June 2022, rated the school Good. Inspectors highlighted the overall quality of education and the strong relationships between staff and pupils.