This polygon covers the area occupied by Hillsborough Primary School. It was built in 1884 for Ecclesfield School Board and shares similarities to the Sheffield School Board schools of the previous decade. Catchbar Lane, which forms one side of the polygon, takes its name from the old turnpike road system. Side roads were often used by people to try and evade the toll on the main turnpike roads. Bars or chains were put across these routes, hence the name 'catchbar'. Legibility is invisible.