I agree with hatwoman completely on this - whether you are religious is not a simple yes/no question for many.
I haven't had ds christened yet - but I would like to.
Me and dp don't attend church at all nowadays, ds sometimes goes with his gps. I don't know what I believe.
However both me and dp come from quite religious families (dp's mum was recently made a deacon) and church has been a big part of our lives.
Because of this, and because of the place of the Church in the state, certain rites/ceremonies are as large a part of BRitish culture as they are religious. Many people do it although they wouldn't maybe describe themselves as religious because it is a rite of passage, a cultural thing, the way things are done - that isn't hypocritical in my view. IT's as much a belief as christianity.
The schools thing I don't have much of a view on tbh.
Most the vicars I have known would welcome a child's christening, regardless of whether that child or parents were a regular member of the congregation because they would want to welcome them into their faith and share their faith regardless of this.
I don't particularly view it as a christian action to tell people they shouldn't be doing it or that they are hypocrites.
Christ said 'let the little children come to me' not 'unless their parents aren't real believers'. He believed in welcoming all regardless of what they believed.