Police said Christine A. McCallum, 29, had sex with the student on the boy's kitchen floor, in the shower and in the living room -- all beginning when he was 13-years old, the Boston Herald reported.
The alleged victim is now 16. He said he and the teacher had sex "possibly every other day," a police report said.
McCallum faces three charges of statutory rape. She was being held on $10,000 bond.
"The defendant is obsessed with this young child," Assistant District Attorney Michael Scott was quoted by the newspaper as saying.
McCallum has been placed on administrative leave from her job as a fifth-grade teacher in Abington, Mass.