Below 18 yrs, at the time of application, do not need to go for test. I called before test for this and they answered me if kids need to go for interview, CIC willl mail. So I did not take my kids to exam today.
Today after exam they told me that kids above 14 yrs will need to come for oath as they have to take their citizenship certificate themselves. So I have to bring my kids to oath ceremony.
I took all my kids passport, PR card... with me today, but the officer only asked for my and my wife's papers, no need kids papers.