They aren’t undocumented immigrants - they are illegal aliens.
As the article points out they have plenty of documentation.
And all of their documentation shows that they are citizens of Mexico and other countries - not citizens or legal residents of the USA.
That’s why the school passed this policy - to hide their documentation from authorities.
Why do people think Barack Obama hides his birth certificate?
It isn’t just to tease republicans.
Who lets these so-called journalists continue to use undocumented instead of illegal. Commies have always twisted the language to promote their propaganda. Substituting lies for the truth.