Was going to reply- but Elegran has said it much better than I would.
Of course I wouldn't mind my children or granchildren being taught by a Christian, or a Muslim, or a Humanist or an atheist. I would expect any teacher to be fully professional and keep their belief out of teaching- whatever they believe.
BTW I have huge respect for people who have a faith, and we are very lucky that we have friends and family that belong to so many denominations, many Christian ones, but also several other faiths. We work all the time with our local Protestant Church running social activities for the elderly and youngsters in the region- and we lend part of our property to the Church for catechism, choir, luncheons for the elderly, Bible studies and more- free of charge and helping with serving, cleaning, helping, etc, etc. So anyone who says I am anti-religion got it all wrong. I am not- at all- and have huge respect for their faith. Perhaps a lot more respect than those who are happy to use the Church for ceremonies, maraiges, baptisms, funerals, etc- with their fingers crossed behind their back- and those who 'use' CofE schools for umpteen other reasons than a 'faith'.