A Mercer County high school student who prosecutors say was talking on her cellphone while driving has admitted to hitting and killing her school superintendent while he was jogging.

The student pleaded guilty on Monday to leaving the scene of a fatal crash and careless driving.

Prosecutors say that the 18-year-old will face three years of probation, lose her license for two years and must serve 200 hours of community service when she's sentenced under terms of a plea agreement in January.

Authorities say she was late for a class trip when she hit Robbinsville Superintendent Steven Mayer in April, killing him and his dog. Mayer was the married father of three sons.

Prosecutors did not release the student's name because she was 17 when it happened.