The SCP Foundation Puts People In The Cells Of SCPs, The People Who Are Putted In The Cells, Must Test The SCP That Is Near The Personel. There Are Some Classes Of The Personel; Class D Is A Psychopath Testing A SCP, Every Class D, In The Beginning, Goes Near The SCP They're Testing. Class A Are Just Normal People Who Are Testing An SCP. Theres Propably More Classes, But I Do Only Know Class D, And Class A.
TIP: SCP Foundation Is A Building That Contains Monsters From Other Dimensions. The SCP Foundation Saves Some Safe Monsters From Danger, Like SCP-999. And SCP Means: Secure. Contain. Protect.