古物古蹟辦事處
Between 2005 and 2007, the Antiquities and Monuments Office (AMO) conducted some investigation into the remnant at PMQ. They found the remains of the Central School, including the granite shafts and plinths of the boundary walls and the retaining walls, the quoin stones at the corners of the site and the steps. The AMO rated PMQ as Grade III Historic Building in 2010.