I think that is partly right.
One issue is what it means to say God acts in history. The religiously inclined scientist will probably think He does so by means of the laws of nature. So for example it is a fairly standard Catholic position (I think) to say that life was created by God through the operation of those laws, rather than by supernatural tinkering to override nature, as if it were a badly made car or something.
Einstein seems to have inclined towards the views of Spinoza, a fellow Jew, who considered that nature or its laws ARE God. I think that is an interesting idea, in fact. I was very struck, when learning statistical thermodynamics at university, how the laws of nature, operating on purely random behaviour of atoms and molecules, produce ordered behaviour at the macro level. So order is brought out of chaos by the rules that govern matter and radiation.
However if by God acting in history you mean the biblical miracles, then you are right that science has no place for them within its thought. But so what? There are plenty of aspects of human experience that science has little or nothing to say about.
And lastly, although I do not live in the USA, I would be very much surprised if the schools teach physicalism. Surely subjects such as literature and the arts should give children the idea that there may be more to human experience than the mere study of nature, and thereby at least leave the issue open. Though I realise there is no religious knowledge study in the USA. I think that is a pity. In the UK there is scope to discuss the sort of issues you and I have been debating and I think that is a good thing.