An archaeological watching brief was carried out at Beech Court, Abingdon School between 1st June 2016 and 3rd March 2018 in advance of the construction of a new classroom, access and garage. In the western half of the site a stone wall, not visible on any historic map, was uncovered. Three further trenches were excavated along the projected line of the wall to clarify its character, date and extent. These established that a series of three stone piers had been constructed in the later 18th century. They are believed to represent supports for a timber-arcaded structure of late 18th to early 19th century date. The southernmost trench contained the partial skeleton of a dog, together with an 18th century sherd from a Chinese porcelain bowl. Area 1 exposed a brick surface dating to the later 19th century. Area 2 contained a pit which was only partly observed, but contained 19th century material. Area 3 revealed the top of a known World War II bunker, around the edge of which were several pits and a tree-throw hole, all appearing to be post-medieval in date. Trench 3 included a construction cut and a tree-throw hole, both of which appeared to be 19th to 20th century in date. Trench 4 exposed part of a large quarry pit which was thought to be post-medieval in date.