In one case, 27-year-old substitute teacher Chukwuma Duru is accused of forcibly touching a student at the Bronx Career and College Prep High School.
In the other, a 12-year-old student at the Dr. Richard Izquierdo Health and Science Charter School says 53-year-old teacher Evelyn Tirado punched her.
Duru was charged with forcible touching and endangering the welfare of a child for allegedly pinching a 16-year-old boy's nipples. Authorities say Duru squeezed and twisted the boy's nipples on February 10 until he was in pain. He was arrested three days later.
The assault did not appear sexual in nature, and Duru was removed from the school.
Tirado was arrested Tuesday and charged with assaulting the girl during a dispute. The student claimed Tirado hit her, shoved her to the ground and sat on her last Thursday.
Tirado surrendered to police on Sunday and was issued a desk appearance ticket. Detectives then too her into custody Tuesday.
The arrests come after three other arrests of school employees this month.
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