What is the law about parking school bus in residential area in Shreveport, Louisiana?

You will need to call up the Zoning Department in Shreveport and ask them. If it is not allowed, the zoning people will notify the resident not to do this.

You may also call up the school listed on the side of the bus and ask them if they know where their bus is parked at night. They would be interested to know if the bus was supposed to be parked in a locked bus yard and was not as this could present problems with their insurance carrier.