def valid?
      grade_validator = EnumAttributeValidator.new('String', ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "PreKindergarten", "Kindergarten", "PostGraduate", "Other"])
      return false unless grade_validator.valid?(@grade)
      subject_validator = EnumAttributeValidator.new('String', ["english/language arts", "math", "science", "social studies", "language", "homeroom/advisory", "interventions/online learning", "technology and engineering", "PE and health", "arts and music", "other"])
      return false unless subject_validator.valid?(@subject)
      return true
    end
def valid?
      grade_validator = EnumAttributeValidator.new('String', ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "PreKindergarten", "Kindergarten", "PostGraduate", "Other"])
      return false unless grade_validator.valid?(@grade)
      subject_validator = EnumAttributeValidator.new('String', ["english/language arts", "math", "science", "social studies", "language", "homeroom/advisory", "interventions/online learning", "technology and engineering", "PE and health", "arts and music", "other"])
      return false unless subject_validator.valid?(@subject)
      return true
    end
Check to see if the all the properties in the model are valid
 @return true if the model is valid