"Do they know what is the background of St Xaviers school? What politics is associated with it?"
and sarkozy,
mind your f.king language.For the two years I studied in Xaviar's it never felt like we were in a missionary school trying to preach us Christianity. They don't even mention Christ or Christianity for that matter. We had this class called 'social' something and we would talk about problems and social issues but the sisters and the fathers aren't there to convert us. Xaviarians started out as missionaries but times have changed and so has their focus. They are more into helping society (through God's will as they say ). But if someone wants to do good ( garbage collection , roadwork, helping poor and underprivileged kids in Kanti Hospital, etc) in the name of God, then why not?

And would you kindly tell me the politics associated with it?

Peace.