The claim that every school is intrinsically religious is hard to grasp at face value. The naked eye sees religious schools adhering to faith commitments and non-religious schools educating within a neutral philosophical landscape.
Neutrality is an attractive option for many; after all, isn’t it better to teach the curriculum without letting the monkey-wrench of theology jam the gears? Can’t we get on with the business of learning about maths, science, and history, without shoehorning in religious claims? That’s not as easy as it seems.
While at the level of 2+3=5, or spelling the word apple, it may be possible to operate with a species of impartiality. However, this sort of learning represents a narrow slice of the educational pie, the rest of the pie being filled with a chunky metaphysical stew.
What is the purpose of learning? What does it mean to be human? How should we treat others? How should we interact with the earth on which we find ourselves? A “neutral” education would have to navigate around these matters and, in doing so, would cease to be much of an education at all.