Ed Brayton encourages us to applaud these kids and I am happy to join him.
They are certainly taking a step in the right direction.
However, why are they reciting any pledge at all?
The only ones who should be reciting a daily pledge are our servants: government employees everywhere.
As I wrote here a couple years ago:

..there is a group who by dint of their position should recite a pledge…probably several times per day. That would be the set of government employees, elected, appointed or hired, throughout the world. Our servants: congress critters, kings and queens, premiers, secretaries of desks and states, governors, presidents, soldiers, firepersons, police, mayors, etc.
They, each and everyone, in every government job throughout the world should start their day with something like:

I pledge allegiance to the people of name your jurisdiction and swear to protect their lives, help them maintain their liberty and assist them in their pursuit of happiness.

…and repeat it frequently throughout the day and once again before going to sleep at night.

Free individuals are under no obligation to recite pledges of allegiance of any kind.