Yissachar Dov Gurvitz was involved in running a Beis Rivkah girls' school, to whom the Rebbe wrote in the 1950s on its educational and practical affairs. No reliable published biography is available; the summary below is drawn from the letters themselves.
The Rebbe's letters deal with the life of the school: admitting both Anash and local girls for the summer (IK 2179); teaching Tanya to older students (IK 2375); shortening the school vacation (IK 2802); teaching sewing at Beis Rivkah and preparing for the Kislev holidays (IK 3049); Chanukah preparations for the students and a public event for parents (IK 3910); efforts to attract more students (IK 4067); the school's move, success in holy work, and Lag BaOmer preparations (IK 4256); scheduling secular studies in the morning and planning for the summer (IK 4397); and coordinating the teachers' vacation, and the value of learning (IK 4489). The Rebbe also thanked him for school photographs and blessed the educational work (IK 2906).
See also: Education – Running a school; Women – The role of the Jewish woman.