@Domojestic
The graduation ceremony is happened during their first year of junior high as the translator made a mistake in their v1 chapter. As for the handkerchief chapter, you must be talking about the "Price Guessing Game" chapter. Why don't you re-read the chapter and you can see they seat...
One bit of advice, it is possible to update a chapter without needing to delete the entire chapter. You doing so will cause Reddit user a real pain as you broken the link for them.
The manga is taking a break for this week Comic Spirits.
Another thing, I done some digging. This manga will release 3 chapters in 4 issues of Comic Spirits. If there's a double issue, then it will take longer to have a new chapter.
Chapter 92 is now available to read for free for the next 3 weeks in official site.
Link: https://pocket.shonenmagazine.com/episode/13933686331813840961
@IAzura
That's because moto-Takagi-san is a weekly manga, which have around 48 chapters release per year. While the main Takagi-san is a monthly manga, which now have minimum of 18 chapters release per year.
Fun fact, the main Takagi-san only have 32 chapters during the first 3 years of running...
@Ropoloid
It's the wrong translation. It is "whoever get to the next classroom wins", since using "going to art room first" doesn't make sense because Takagi-san win the game by reaching the next classroom first by going to A/V room.