RIO DE JANEIRO, March 20, 2015 /PRNewswire/ -- Estacio Participations S.A. – "Estacio" or the "Company" (BM&FBovespa: ESTC3; Bloomberg: ESTC3.BZ; Reuters: ESTC3.SA; OTCQX: ECPCY), one of the largest private institutions of higher education in Brazil in terms of number of...