Ayatollah Sheikh Isa Ahmed Qassim is Bahrains leading Shia cleric and a politician. He is the spiritual leader of Al Wefaq, Bahrains biggest opposition society. He was the leader and is the founders of Islamic Enlightenment institution.
Isa Qassim was born in 1937 to a fisherman in Duraz. He attended Budaiya primary school where he was known for his intelligence and it was reported that he always scored the highest marks. After finishing primary school and with his brothers aid he moved to Manamas secondary school. After graduating he worked as a teacher in Budaiya primary school where he remained until 1962.
Source: Wikipedia