That's according to officials with the Pulaski County Special School District (PCSSD).
It happened at Jacksonville Cato Elementary.
The Sherwood Police Department says it got the call shortly after 10 o'clock.
The PCSSD says a first grade boy brought the toy gun to school. After another student saw it, the teacher sent the boy to the office.
Sherwood Police say the school will handle the matter.
It's not yet known what disciplinary action will be taken against the student.