The lead doesn't provide a summary about the film's production stage. There should be at least an overview on how did the process in making this film come about. Also, the lead doesn't have to be supported with references as they are cited elsewhere in the article.
I notice cite #6 was retrieved from IMDb. WP:CITEIMDB warns editors on citing this website since, like Wikipedia, it's a user-generated website. Cite #8 is retrieved from BuzzFeed. Buzzfeed appears to be a venue for self-publishing and a trivia blog, thus unreliable.
Lots of unreferenced claims, with the "Production" section being one of them. This is a red flag for possible original research. As you can see in the "critical reception" subsection, one claim is even tagged as unsourced.
It represents viewpoints fairly and without editorial bias, giving due weight to each:
Not really sure since these claims Prisoner of Azkaban earned notable critical acclaim and is often regarded by fans and critics as the best film in the franchise. as well as Despite its successful box office run, Azkaban is the lowest-grossing Harry Potter film (all the others have grossed more than US$875 million worldwide) and the lowest-grossing film of J.K. Rowling's Wizarding World Series. are unsourced.
Is it stable?
It does not change significantly from day to day because of an ongoing edit war or content dispute:
While I thoroughly examined the article for this review, I noticed in the article's edit history that you are not a main contributor to it. I would like to gently remind you good article best practices: "While anyone may nominate an article to be reviewed for GA, it is highly preferable that nominators have contributed significantly and are familiar with the article's subject and its cited sources. Nominators who are not significant contributors to the article should consult regular editors of the article prior to a nomination." But you're in luck because this will give you an opportunity to fix the issues raised in the article. But for now, this is a fail. There's just a decent amount of work need to be done for this to be put on hold. Please do not let this discourage you and keep up the hard work. Thank you. Bluesphere15:34, 27 March 2017 (UTC)[reply]