A third-grade teacher was arraigned Thursday for allegedly molesting an his 8-year-old student at their Harlem school, officials said.

The girl told police that Rafael Sosa, 29, allegedly kissed her on the lips while touching inserting his finger into her private parts, law-enforcement sources said.

The abuse occurred took place over a six-month period ending last week inside a Public School 208 classroom, the criminal complaint charges.