[airborne]

Considering that her t-shirt is actually challenging the authority of the principal and is directly targeted at his DUI, I'd say that the t-shirts are more than just individual expression of the girl's philosophy.

Wher does it say that?

[xzins]

On Friday, Smith wore a different T-shirt, this one reading "Don't Underestimate Individuality," her mother said. The first letters of those words spell "DUI." Her mother said the teen plans to wear the banned T-shirt again on Monday.

Here.

The earliest messages + the above will be seen through by a court.

I think they'll rule against the girl.

Finally, I agree. School uniforms would quickly solve this issue.