A federal appeals court ruled in favor of a Pennsylvania fifth grader who wanted to distribute invitations to a church Christmas party at her public school.
    
The panel upheld a lower court's decision that permitted the student to hand out the invitations based on a free speech standard stemming from a Supreme Court ruling during involving a high school anti-war protest in the Vietnam era.
    
The appeals court says the law is still evolving, but the invitations are allowed because they won't cause a "substantial disruption."