Complex sentence: Membership of the association is open to all graduates of Government College Ikorodu: all male and female students that graduated from the school since the first graduations in 1979 are free to join up as members.
Split into simpler sentences: Membership of the association is open to all graduates of Government College Ikorodu. This implies that all male and female students that graduated from the school since 1979 when the first set of graduates were turned out are free to join up as members.