In Boston Public Episode "Chapter 36", there is a sub-story about Zach Del Ray asking Ronnie Cooke to prom. This is odd because in Episode "Chapter 34", Zach Del Ray dies in a car accident. In my copy of the episodes, they are in "Chapter order," so I saw Zach Del Ray die 2 episodes earlier. However, after looking up the episode guide on Wikipedia:
The episodes are listed as:
S02e11 - Chapter 33 S02e12 - Chapter 35 S02e13 - Chapter 36 S02e14 - Chapter 34 S02e15 - Chapter 37
This is the first instance of the "Chapter order" (chronological order of the story) not being the same as the "episode order" (chronological order of the episodes)
It also seems that in Season 4, this happens a few more times:
S04e01 - Chapter 67 S04E02 - Chapter 69 S04E03 - Chapter 68 S04E04 - Chapter 70 //... S04E08 - Chapter 74 S04E09 - Chapter 76 S04E10 - Chapter 75 S0rE11 - Chapter 77
For the rest of the series, the "Chapter Order" and "Episode Order" are the same.
I never noticed that the season 4 episodes were out of chronological order until researching this question, but the season 2 thing has always bothered me, since the "back from the dead" thing is such a glaring inconsistency.
Why did they do this? I get that there are any number of reasons to progress a story out of chronological order for storytelling purposes, but I don't understand what is to be gained here, and why it was done for just a handful of episodes. Was it a scheduling conflict in producing the show? It just seems very strange, especially for a show where every single episode is named "Chapter XX"
If you do know why, has that happened on other shows?