A student is not bound to reproduce slavishly the interpretations of others, but you are bound to assess critically what you read.
Before you can say, "I disagree," you must be able to say, "I understand." It is axiomatic that before you level criticism you should be able to state an author's position in terms that he or she would find acceptable. After that, you may proceed in any of six directions:
a. Show where the author is misinformed.
b. Show where the author is uninformed.
c. Show where the author is inconsistent.
d. Show where the author's treatment is incomplete.
e. Show where the author misinterprets through faulty assumptions or procedures.
f. Show where the author makes valuable contributions to the discussion at hand.
[1] Gordon Fee, Exegesis, 3rd edition 2002 p.33