A teacher located the student and took away the weapon, which was wrapped in an article of clothing.
Schertz police responded early Tuesday to Rose Garden Elementary School after being notified an 8-year-old was in possession of a firearm, according to Schertz-Cibolo-Universal City Independent School District.
The incident occurred about 11:40 a.m. when a student told a teacher he was shown a handgun by a classmate.