Sarah Mabel Crocker, [WORD ILLEGIBLE] a teacher and principal in D.C. and Montgomery County schools for many years, died of a heart ailment Tuesday at her home in Takoma Park.

Mrs. Crocker was born in Elmira, N.Y., and graduated from Elmira College there. She moved to the Washington area in 1908, the year she married Frederick William Crocker. She was principal of Chevy Chase Elementary School from 1918 to 1920, and then taught at the Amerizanization School in the D.C. public school system from 1920 to 1925.

She later taught at the Cynthia Warner School, a private school started by a daughter, Cynthia Warner Brooker of the home in Takoma Park.

From 1950 to 1960, Mrs. Crocker was in a silver-plating business with another daughter, Marcia C. Abercrombie, of Silver Spring. She then taught invalid children for the Montgomery County school system until her retirement in 1965.

Mrs. Crocker earned a master's degree in psychology from American University in 1933. She was a past president of Apha chapter of Phi Delta Gamma, an organization for women holding graduate degrees, and contributed to the group's "Journal."

Among Mrs. Crocker's hobbies was ballroom dancing, in which she was a gold bar medalist. She also was a member of the Writers Club.

In addition to her daughters, Mrs. Crocker is also survived by a son, J. Allen Crocker, of St. Petersburg, Fla., eight grandchildren, six step-grandchildren, eight step-great-grandchildren, and two step-great-great-granchildren.