Thank you for asking question on health care magic.
This is a slapped cheek caused by parvovirus
this spreads through droplet infection from respiratory tract
The infective period starts from 6 days after exposure and lasts for a week.
50% of household contacts and 25% of school contacts will be affected.
your attending school depends whether you are affected or not.
To be on safe side it is better not return to school for the moment
Hope this answer will serve your purpose
Please feel free to ask any more queries if required
Associate professor of pediatrics