def valid?
      high_grade_validator = EnumAttributeValidator.new('String', ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "PreKindergarten", "Kindergarten", "PostGraduate", "Other"])
      return false unless high_grade_validator.valid?(@high_grade)
      low_grade_validator = EnumAttributeValidator.new('String', ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "PreKindergarten", "Kindergarten", "PostGraduate", "Other"])
      return false unless low_grade_validator.valid?(@low_grade)
      return true
    end
def valid?
      high_grade_validator = EnumAttributeValidator.new('String', ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "PreKindergarten", "Kindergarten", "PostGraduate", "Other"])
      return false unless high_grade_validator.valid?(@high_grade)
      low_grade_validator = EnumAttributeValidator.new('String', ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "PreKindergarten", "Kindergarten", "PostGraduate", "Other"])
      return false unless low_grade_validator.valid?(@low_grade)
      return true
    end
Check to see if the all the properties in the model are valid
 @return true if the model is valid