An earlier, unanswered, question has had me scratching my head trying to remember the author and title of particular short story.
In the background revealed in the story, there is a health scare amongst the parents of a school. Children have received genetic modification intended to be improving. The change has an unexpected defect, causing the eldest of the enhanced children have started to spontaneously fit and (it is implied) die. If I remember correctly, the epileptic fitting is referred to as 'blitzing',
The story itself is presented as a a first-person address by a girl, one of the few without the modification, to her school appealing for calm and understanding.
I must have read this in the early nineties, but the anthology it was in could have been published any time in the previous 15 years. I had thought it was by Asimov, but I've looked through all of the collected works and can't find it, so I suspect it was perhaps an anthology that he edited.