Good, in the way that matters and not in the way that gets mentioned at dinner parties. There is one secondary school and it takes the whole town plus the villages around it. The primaries are small, church-linked and walkable. Nobody is moving to Westbury for the school run as a status object. They are moving here because the school run is four minutes long.
Ofsted has graded 128 settings across Wiltshire, and 106 of them sit at good or better. That is more than four in five. Six carry outstanding, twenty need improvement and two are rated inadequate. Those are authority-wide counts covering everything from village primaries to sixth forms, not a scoreboard for this town alone, so treat them as the weather rather than the forecast. A further 73 settings hold no published grade at all, which usually means they have not been inspected under the current framework rather than anything about how they are doing.
The thing that trips up buyers is the assumption that the nearest school is the school you get. Wiltshire allocates places by its own admissions rules, and a house two streets from the gates is not a guarantee of anything. Estate agent listings mention proximity because proximity is easy to photograph. Check the actual admissions arrangements for the specific year of entry before you let a school name influence the offer, because the arithmetic can move between one intake and the next.
Matravers School is the secondary, and it does more work than any other single institution in the town. It serves Westbury along with Chapmanslade, Bratton, Dilton Marsh and Edington, and it runs a sixth form offering a range of subjects, which is the part that matters if you would rather not put a sixteen-year-old on a train to Trowbridge every morning. For a town this size, having your own sixth form is a genuine convenience rather than a bragging point.
At primary level the town splits its intake in a way that takes a minute to understand. Westbury Infant School takes children from reception to year two and feeds Westbury Church of England Junior School, which carries them through to year six. That is a two-school route through primary rather than one, so parents plan for two sets of gates rather than one. Bitham Brook Primary School mainly serves the western part of the town. Westbury Leigh Church of England Primary School moved onto the Leigh Park estate, which is where the newer housing went up, and sits alongside the district centre there. Beyond the town boundary there are further primaries at Bratton, Dilton Marsh and Chapmanslade, all serving villages that send their teenagers back to Matravers anyway.
Westbury also carries several specialist and alternative settings, including a further education option at Fairfield Farm College, which is not something most towns of this size manage. For anything beyond eighteen, the nearest further education campus is at Trowbridge, four and a half miles north, and the nearest university is eighteen miles the other way at Bath. There are also daytime adult education sessions run at the Westbury Community Project building, which is a small thing that says something about how the town uses what it has.
Schools are one of the stronger cards Westbury holds. A full secondary with a sixth form, a walkable set of primaries and an authority whose graded settings land overwhelmingly at good or better is a better position than most towns at this price manage.