Thrown facing English class (5)
I believe the answer is:
caste
'class' is the definition.
(type of social class)
'thrown facing english' is the wordplay.
'thrown' becomes 'cast' (I've seen this before).
'facing' means one lot of letters go next to another.
'english' becomes 'E' (abbreviation).
'cast'+'e'='CASTE'
(Other definitions for caste that I've seen before include "Group within society" , "Social order" , "Hindu determinant of status" , "Level in society" , "Social division in India" .)