A summary of "The Wednesday Wars" by Gary D. Schmidt appears on BookRags.com, eNotes.com, PluggedIn.com and Wikipedia. These sites offer both free summaries and in-depth study guide summaries for purchase.
BookRags.com, an online educational resource, offers a free preview summary. As of September 2015, customers can purchase a monthly study guide pack that includes access to an in-depth plot summary, chapter summaries and a summary of themes, characters and styles.
A substantive free summary of the book and free chapter summaries and analyses are available on the eNotes.com homework help site.
Pluggedin.com, a site that focuses on family entertainment, offers a rather lengthy free plot summary, as well as a summary of some of the book's themes.
Wikipedia offers a very brief summary of the book.