Ask again for reading and English instruction (7)
I believe the answer is:
reorder
'ask again' is the definition.
('order' is an answer for 'ask' so perhaps 'reorder' is OK for 'ask again')
'reading and english instruction' is the wordplay.
'reading' becomes 'r' (one of the traditional three R's of education).
'and' says to put letters next to each other.
'english' becomes 'E' (abbreviation as in OED).
'instruction' becomes 'order' (an order to do something).
'r'+'e'+'order'='REORDER'
'for' acts as a link.
(Other definitions for reorder that I've seen before include "Request for further supply" , "marshal over" , "Make a further request" , "Rearrange" , "Arrange afresh" .)