What is the most important part in The Wednesday Wars? The Wednesday Wars by Gary D. Schmidt.
There are many ways to determine a "most important part" of a novel: thematically most important; plot development (conflict) most important; character development most important; structurally most important. To the overall purpose of the novel Wednesday Wars, the climax can certainly be considered a way to discuss the "most important part." The climax is the most important part in general terms because it is at the climax that conflicts are overcome and resolution is begun, which leads to the final moment of the story (hopefully a happy moment). In Wednesday Wars, the climax is where the resolution of several major conflicts all coincide.
In one instance, after having conquered Shakespeare and cross-country running in his Wednesday wars, Holling sees a major conflict end when his sister, who ran away after a dispute over which college she might attend, comes home to reunite their family (even though Mr. Hoodhood is devastated because he didn't get the Yankee Stadium contract). In another instance, Mrs. Baker finds the has the support of the whole seventh grade class as she goes to the airport to meet her husband, who was Missing In Action in Viet Nam, so that their family may be reunited as well. Incidentally, viewing the climax as the most important part also marks the theme of reuniting as a most important thematic part.