SPED 232 Timeline By brfoos Period: Jan 1, 1880 to Jan 1, 1930 Parent's as the Source or Cause of Their Child's Disability Parent's as the Source or Cause of Their Child's Disability Period: Jan 1, 1930 to Jan 1, 1959 Parents As Organization Members Period: Jan 1, 1950 to Jan 1, 1969 Parents as Service Developers Period: Jan 1, 1960 to Jan 1, 1979 Parents as Recipients of Professionals' Decisions Period: Jan 1, 1960 to Jan 1, 1989 Parents as Teachers Period: Jan 1, 1970 to Jan 1, 1989 Parents as Political Advocates Period: Jan 1, 1990 to Jan 1, 2012 Families as Partners Period: Jan 1, 1990 to Jan 1, 2012 Parents as Educational Decision Makers