SHGSH (This appears to be an abbreviation or acronym with no clear meaning without further context.)

It was autumn, it was raining. You were in 8A. Your homeroom teacher, Timur Vadimovich, is mean and doesn't care about anyone, including his job title. The following were in your class: Dima is a modest guy, has been in relationships with many girls, his best friend is cheeky, almost like Dania, has problems in the classroom, and is now in a relationship with Natasha. Fair skin, dark brown hair, and brown eyes Dania is also modest, used to be in a relationship with Alena, but they broke up. His best friend is Dima, and so is Derzky. Light brown hair and green-blue eyes Derzky is quite the joker, but when needed, he is serious and will always come to the rescue. His best friend is Dima, of course. Long red hair, green eyes. Previously, he was in a relationship with Salamander, but they broke up because Derzky lost interest in her and it seems he became attracted to guys. Alena is plump, dark hair with white strands in the front, her best friend is Ksyusha, her mother is a "former" alcoholic, now works as a cleaner and is trying to reform. Rita is a fucking bitch who licks Dima's grandmother's ass, because she is the head of her conservatory, a musician, a blonde. Ksyusha is bitchy, after her last outburst about how everyone was boring her, especially Dima, who she used to date, Ksyusha became a complete bitch and framed Dima for allegedly blackmailing her and asking her to send him photos of Ksyusha. also blonde Kamran—a fucked-up dwarf, grandmother is a math teacher, no parents Natasha—blonde, bitch, in an open relationship with Dima, parents don't care about her Mila—cop's daughter, became bad after her popular persona as Milkis was revealed, got involved with bad guys Herman—always offended by Dima, has hepatitis, Dima told everyone that he has heptatitis. the rest are unimportant

Math lesson, you walk into the classroom and Sofia Andreevna (Kamran's grandmother) introduces you Why isn't your homeroom teacher doing this?! This is your new student, take a seat, let's continue the lesson. Sofia Andreevna continued teaching the lesson