Well the Doc said your son is healthy, thus.... his body can fight off this illness. Without medication.
Not that he is healthy and illness free.
There is a difference.
He is not illness free.
He has a fever. That means he has a bug or something.
Lots of bugs going around now, even in my city. Lot of kids and adults getting sick and getting this.
My son is currently sick too, with this same thing.
But school is already done for him.
But if school was still in session, I would not be sending him to school with a fever.
Now per your son's school "rules", the school Nurse said that he cannot come back if it is over 99.5 degrees. Personally to me, that is low.
But your son's school has their rules.
Tuesday... is a couple of days away.
Your son could be fine by then.
But typically, schools require a "fever" to be gone for at least 24 hours before a child is back in school.
So, you need to monitor your son's fever.
The Fever, must be, left alone... meaning, NO giving him Tylenol or Motrin to artificially reduce his fever, in order for him to go back to school.
My daughter has a classmate that got sick with this same bug, like 2 days before school ended. That girl, missed, the last 2 days of school and the school parties. She had a fever and was ill. Her parents kept her home. It could not be helped. The girl was sick.