Ramsey McDonald's teacher asked fourth graders at Miller Elementary School to bring in their most beloved toys so that they could talk about them.
The youngster told his dad that he was going to bring in his iPad and some other toys.
"They were trying to get the kids to know each other," said the boy's father, Scott McDonald.
On Tuesday, McDonald received a call from the school.
"They told me my son brought a weapon to school and they asked me if I was aware," McDonald told WMAZ. "I asked them what it was and they said it was a plastic Nerf gun."
The boy ended up with a three-day in-school suspension for bringing the toy to class.
"He told me he didn't know they would think it was a weapon or he wouldn't have brought it to school," McDonald said.