- All's Well That Ends Well
- Antony and Cleopatra
- As You Like It
- The Comedy of Errors
- Coriolanus
- Cymbeline
- Hamlet
- Henry IV, Part 1
- Henry IV, Part 2
- Henry V
- Henry VI, Part 1
- Henry VI, Part 2
- Henry VI, Part 3
- Henry VIII
- Julius Caesar
- King John
- King Lear
- Love's Labor's Lost
- A Lover's Complaint
- Macbeth
- Measure for Measure
- The Merchant of Venice
- The Merry Wives of Windsor
- A Midsummer Night's Dream
- Much Ado About Nothing
- Othello
- Pericles
- The Rape of Lucrece
- Richard II
- Richard III
- Romeo and Juliet
- Shakespeare's Sonnets
- The Taming of the Shrew
- The Tempest
- Timon of Athens
- Titus Andronicus
- Troilus and Cressida
- Twelfth Night
- The Two Gentlemen of Verona
- Venus and Adonis
- The Winter's Tale
In the common room one night, Harry watches Fred and George demonstrate their Puking Pastilles (one of their joke candies) and remarks that judging by what they're able to produce in terms of magical joke products, they know more about magic than their three passing O.W.L. scores would let on. This shows that Harry is beginning to suspect that O.W.L.s aren't the only ticket into the adult Wizarding world; Fred and George are clearly doing well for themselves even without high test scores.
This also opens up the possibility that O.W.L.s and N.E.W.T.s are poor ways to measure students' success…