This link gives the names of all the KV schools (around 35-40) in Chandigarh region (http://www.cbseportal.com/kvs/chandigarh)
The regional KV office is in.
ADDRESS- Kendrya Vidyalaya Sangathan,Regional Office SCO 72-73,Sector 31-A Dakshin Marg, Chandigarh-160030. Often informal chat with someone whom you know or get an introduction to people in the office will be get good information. You can also speak to good teachers or even the prinicipal of the 10th standard school you are finishing from, they will have valid suggestions regarding the good schools.
Among the schools, you can enquire and find out more about these three favorite ones.
1.Kendriya Vidyalaya, 23 BRD Address
3 BRD, Air Force Station,
Near Kalibadi Mandir, Chandigarh - 160002.
Tel: 0172 265 5097
2.Kendriya Vidyalaya, Sector 47, Chandigarh Address
Near Gurudawara, 47B,
Chandigarh - 160047.
Tel: 0172 263 3404
3.Kendriya Vidyalaya OCF 29 Chandigarh Address
OCF Sector 29-B,
Chandigarh - 160030.