The pledge as it's written is assuming the existence of a god, whatever your definition of a god is.
That's a religious view, a view not everyone has.
If someone likes stating something in school that assumes there's a god, they have all the right in the world to do it on their own time without alienating those who don't assume the existence of a god.
Sigh. The pledge is written assuming that the country was founded on a principle of God given rights and it is those very god given rights acknowledged and protected by our government that is the entire basis of American exceptionalism. I have as much right to my historical perspective and to acknowledge it as you have the right to omit 'under God' when you say the Pledge if you interpret the phrase differently than it was intended.
There is no requirement of any kind to believe in any kind of God via the pledge, or say the words if you don't believe them and therefore it violates nobody's rights.
Shall we scrap the National Anthem because the fourth verse mentions God and recites the national motto: "In God we trust"?
Oh! thus be it ever, when freemen shall stand
Between their loved home and the war’s desolation!
Blest with victory and peace, may the heav’n rescued land
Praise the Power that hath made and preserved us a nation.
Then conquer we must, when our cause it is just,
And this be our motto: “In God is our trust.”
And the star-spangled banner in triumph shall wave
O’er the land of the free and the home of the brave!