Wallace Hall is a 2-18, state-operated comprehensive school in Thornhill, Dumfries and Galloway, south-west Scotland. The school serves all school-aged children in the local area, with three distinct schooling types operating under one building. These are; The ELC, Primary School, and Academy. The ELC and Primary School serves children aged 2–12 located within Thornhill's local catchment area, whilst the Academy serves children aged 11–18 located within Thornhill's local catchment area, as well as a plethora of surrounding rural located Primary schools. As of September 2023, the school operates with a roll of 551 pupils (secondary), and 158 pupils.

Thornhill is a village in the Mid Nithsdale area of Dumfries and Galloway, Scotland, south of Sanquhar and north of Dumfries on the main A76 road. Thornhill sits in the Nithsdale valley with the Carsphairn and Scaur range to the west and the Lowther hills to the east. It was initially a small village, planned and built in 1717 on the Queensberry Estate on the road linking Dumfries to Glasgow. The Earl of Queensberry initially named the village 'New Dalgarnock' however the name did not achieve popular approval.