One can step over the line, like tellin' the kid his/her mom was bad and going to hell, crazy hunh?
However.........
I reckon it could be studied some in history and social studies.
In particular American history?
It wouldn't hurt to teach children that George Washington believed in God and his son Jesus.
http://www.propheticroundtable.org/ForeFathers/GeorgeWashington/A Prayer.htm
Almighty God,
We make our earnest prayer that Thou wilt keep the United States in Thy Holy protection; and Thou wilt incline the hearts of the Citizens to cultivate a spirit of subordination and obedience to Government; and entertain a brotherly affection and love for one another and for their fellow Citizens of the United States at large, and particularly for their brethren who have served in the Field.
And finally that Thou wilt most graciously be pleased to dispose us all to do justice, to love mercy, and to demean ourselves with that Charity, humility, and pacific temper of mind which were the Characteristics of the Divine Author of our blessed Religion, and without a humble imitation of whose example in these things we can never hope to be a happy nation. Grant our supplication, we beseech Thee, through Jesus Christ our Lord. Amen.
--George Washington