This ruling does only resolves this dispute. Who determines "substantial disruption."?
This ruling only resolves . . .
The Courts.
To be particular:
“”Tinker requires a specific and significant fear of disruption, not just some remote apprehension of disturbance.” “School officials must be able to show that their actions were caused by something more than a mere desire to avoid the discomfort and unpleasantness that always accompany an unpopular viewpoint.” “Officials must base their decisions on fact, not intuition”