Good, and unusually self-contained. The village runs its own primary and its own secondary, so a child can get from reception to sixteen without ever changing town. Key stage two maths comes in at about 107. Across the wider county, more than four in five graded settings are rated good or better. For once the answer is short and it survives being checked.
There are two mainstream state primaries in the area, and their key stage two maths average sits at about 107. Downton Church of England Primary School is the one carrying the village's name, on the site since 1895, when it replaced the older schools that had been doing the job less formally. Morgan's Vale and Woodfalls Church of England Primary School covers the settlements to the south. Department for Transport modelling from 2019 puts the nearest primary at about 17 minutes on foot and about 8 by car, which in practice means the school run here is a coat decision rather than a logistics operation.
Secondary is a shorter list. One mainstream state secondary serves the area, The Trafalgar School at Downton, which opened in 1964 and took its current name in 2005 to mark the two hundredth anniversary of the Battle of Trafalgar. Naming a comprehensive after a naval engagement is a bold move for a village six miles inland, and it has stuck. Its Attainment 8 score at key stage four is about 44. Modelled journey time is about 19 minutes walking and about 8 by car, so the secondary years do not require anybody to buy a second vehicle.
The Ofsted picture is a county one rather than the village's own, and worth reading as such. Across Wiltshire, 128 settings carry a published overall effectiveness grade. Of those, 106 are good or better, which is more than four in five, with six rated outstanding. Twenty require improvement and two are rated inadequate. A further 73 settings hold no published grade at all, which means not yet inspected or not gradeable rather than anything sinister, and folding them into the total would be dishonest maths.
Two things worth saying plainly. A school being in the village is not the same as a place in it, because admission runs on the local authority's rules rather than on proximity and hope, and the two-school structure means there is no local fallback if the answer comes back wrong. And the state counts above do not include everything within reach: Sandroyd School sits outside them entirely, so the published state figures say nothing about it either way. The rest of the surrounding primaries are village Church of England schools of much the same shape, spread across the parishes towards Salisbury and the New Forest.
On schools, Downton is doing considerably better than a village of this size has any right to expect, and the best part is that none of it is contingent on owning a car.