Allahu alam .Judging purely by the facts stated in the article it doesn't seem like he was unfairly suspended. Any school has rules and some are more stricter than others as far as kids getting absent without an explanation goes. and they had been warned after all so the parents should have done then what they had to do to prevent the school taking such a measure.Note they said the mother "wanted to explain" well she should have pronto at least after receiving the first letter.