Smartschoolboy9 | |
|---|---|
| Born | David Alter December 1962 (age 62–63) Camberwell, London, England |
| Other names | Truth Sticks 11 Stefanie Schoolie |
| Known for | Online persona |
Smartschoolboy9 is a popular alias of an English man, presumed to be David Alter [1] . Smartschoolboy9 gained traction online after creating various Instagram accounts with heavily edited images of real children talking about their school day and participating in disturbing acts. Alter would also frequently dress himself as a school child with a white face and red lips.
Smartschoolboy9 started out online as various Instagram accounts in 2015. He is known to have possessed the identity of Stefanie Schoolie further back then his social media as he submitted a poem to newspapers under her alias. [2]
While David had an online presence doing this act for years, in 2024 YouTubers Nick Crowley and Nexpo would post videos on the man, both gaining millions of views in days. [3] [4] These videos would spiral a trend of reaction videos, bringing millions more eyes to the situation. After these releases, people would take it upon themselves to message David on his Facebook account where he would eventually gather what happened and start messing with the people reaching out to him. [5] Schools would hear about the man and put out safety warnings to children and parents. [6] [7]
Online groups on platforms like Reddit would build a community trying to uncover everything there is to the case [8] but due to the popularity, many online resorted to faking evidence leading smartschoolboy9 to fade from the public eye. In December 2025 however, YouTuber ItzRooster would upload a video explaining how he never left but has been quietly doing the same things he has always done. [9]
As far back as 30 years ago, people recall seeing a man, presumably David, dressing the same way as the infamous videos online. People would reach out to David Firth who lived in the same area, and he would confirm seeing the man in a twitter post. [10]