Maoists blasted school buildings in Kaimur and Rohtas districts, about 250 km south-west of Patna, late on Sunday.
In Kaimur, 40 ultras blew up the building of a missionary school and that of a government school with dynamite. In another operation, Maoists blasted the building of a government school in Rohtas.
Both the schools were badly damaged after the blast, police said adding that no injuries or casualties were reported in the attack. The Maoists later vanished into the forests.