Albish Mormu and Harisham Soren (both 28), who are from Odisha, were employed at a private English medium school in a village bordering Andhra Pradesh under Sironcha taluka of this district.
The duo sexually assaulted the nine-year-old girl, who studies in the same school, a couple of days ago, police said.
When the girl narrated the incident to her parents, they lodged a police complaint yesterday.
Police registered a case of rape against Mormu and Soren and arrested them.
