The headline of the article is
North Carolina high school student suspended over using the term 'illegal alien': Report
Be sure to "how" the student used the term.
The article says, in part, "Another student allegedly took offense to the term and threatened to fight McGhee’s son".
And so Leah McGhee's 16-year-old son got kicked out.
This happened at Central Davidson High School in Lexington, N.C.
The problem with suspensions is that they are imposed almost immediately, before any serious consideration of circumstances or a hearing. That happens there and here.
By the time the student wins his case, the period of the suspension has passed. You can't give the lost time back to the student.