The company has also clarified that it won’t simply add videos with STEM-related hashtags to the feed.
Instead, it’s working with the Poynter Institute and Common Sense Networks to vet each video individually.
With CSN monitoring for appropriate content and Poynter ensuring the information is accurate.

TikTok
TikTok says that videos unable to meet both criteria will not be added to the STEM feed.
TikTok has not mentioned when (or if) the STEM feed will be available in other regions.

TikTok