Sister M. Dolora Mullarkey, I.H.M., who taught at Holy Trinity School in Poughkeepsie during her long career as an educator, died Aug. 16 at Our Lady of Peace Residence in Scranton, Pa. She was 80. She taught at the Poughkeepsie school, 1977-1978. She also taught at schools in Maryland, Pennsylvania, Rhode Island, Delaware and in other parts of New York state. Born in Scranton, she entered the Sisters, Servants of the Immaculate Heart of Mary in 1944 and made final vows in 1950. She held bachelor's and master's degrees in history from Marywood College in Scranton. A Funeral Mass was offered Aug. 20 at Our Lady of Peace Residence. Burial was in St. Catherine's Cemetery in Moscow, Pa.