Gulou to Dachang in Nanjing

I think you may mean the Dachang High School, right?
Yes, you can find bus D2 and the station is on North Zhongshan Road.
You can take this bus to reach Yuandong Road Station and then walk to reach that school.

Thankyou for your reply. It helps but I already know where I am.
I teach English at Yangzi High School on Yuan Xi Rd, Yan Jiang Industrial Development Zone NJ PO Code 210048.
My only problem is finding an appropriate map showing me the route.
I currently take the bus from Gulou Bus Terminal (D2) to Dachang and then either walk or bus to Yangzi High School on bus 644.
No trains go my way yet although it is being built!
Cheers Bill