Rory's first class of the day is English lit, yet on parents' day right after that class she is shown eating lunch.
When Lorelai is upstairs looking for accessories in her bedroom and asking Rory if she knows where they are, Rory is downstairs and places her backpack down - which falls and lays flat. After Rory helps her, she starts walking back downstairs and for a brief moment the backpack is now sitting upright, before then being back laid down in the next angle.
When Sookie asks Jackson to dinner, a red boom mic is visible for a few seconds
Soon after Rory's English teacher starts reciting the Emily Dickinson poem, a boom mic is visible above the classroom.