The official Roblox API lists the experience name as (学乱) Gakuran and maps the user-provided place ID to universe ID 9199655655.
The live Roblox experience page describes the in-game setting as May 2007 in Japan and an intended slice-of-life experience. This is game-world context, not a claim that the current real-world date is 2007. Older API notes in this repository mentioned May 2005, so the page keeps the version change visible instead of silently mixing versions.
This source check is the anchor for the wiki. Tool formulas and combat models are labelled as research models until they can be verified against in-game testing.