I remember Ryan White. It was very sad. But the fact is that AIDS was a brand-new disease, we really didn't know much about it, and no one wants their children exposed to something that will kill them. Just as we keep kids home that had measles, mumps, chicken pox, mono, the flu, etc., everyone thought Ryan should be homeschooled until it could be proven that AIDS didn't get passed on by coughing, spitting, or any other fairly normal child activity.
(And in fact, health care workers still wear full protection gear when treating AIDS sufferers, so there was reason to be afraid.)
I don't hesitate to admit that, if my kids had been in that school, I'd have felt terrible for Ryan...but I'd have moved my kids if he went to their school.