The road where the Pui Ching school is on is called "Pui Ching Road" for the obvious reason the school was the most prominent structure on that short road. On the north side of the road was the sole Kowloon branch of the registration of persons office until 1971 when it moved to Canton road and the opening of a new branch at San Po Kong. Nowadays it is still the location of a government office issuing driving licenses and the roads in its neighborhood used for road tests. Above is a 1970 picture of the office with Pui Ching road in the foreground. Note that it has been demolished but the structures A and B are still visible on 2009 Google map.
Date picture taken
1970