Complex sentence: She studied at the A. S. Pushkin Girl's School in Tartu and graduated in history at the Bestuzhev Courses in Saint Petersburg in Russia in 1910; she was then employed as a history teacher at a girls college in Tartu.
Split into simpler sentences: She studied at the A. S. Pushkin Girl's School in Tartu and graduated in history at the Bestuzhev Courses in Saint Petersburg in Russia in 1910. She was then employed as a history teacher at a girls college in Tartu.