Alongside her musical commitments, she studied finance and accounting at a vocational school, and international relations and diplomacy in Tallinn.
She is fluent in Estonian, Russian, English, German and Finnish.
Siska was a member of a choir at school, and started playing the piano when she was 7 years old.
In August 2009, Siska joined the Estonian Centre Party.
[2] Katrin Siska graduated TTÜ University in 2012 (law).