One possibility could be that Snape grows up in a different magical environment, perhaps in a small, hidden magical community that has its own unique way of teaching magic. He might develop his skills in potion - making and the Dark Arts in a more self - taught or community - guided way. Without the influence of Hogwarts, his relationships would be very different. He may not have the same intense rivalries or unrequited love for Lily Potter.
In a fanfiction where Snape never went to Hogwarts, he could be apprenticed to a powerful but reclusive wizard. Under this wizard's tutelage, he delves deep into the study of ancient magic that has been long forgotten in the mainstream magical education of Hogwarts. His personality might be less bitter as he doesn't have to endure the bullying he faced at Hogwarts. His loyalty and values could be shaped by his new mentor, leading him on a completely different path in the wizarding world.
Maybe he travels the wizarding world instead. He could encounter different magical creatures and learn their secrets, which would give him a different kind of knowledge compared to what he would have gained at Hogwarts. He might become a sort of magical nomad, collecting rare ingredients for potions from all over and developing his own brand of magic that is more worldly and less influenced by the traditional Hogwarts curriculum.
He'd likely be less jaded. At Hogwarts, he faced a lot of hardships like being bullied by the Marauders. Without that, he might be more open and less defensive. His social skills could be better as he wouldn't have developed the same level of distrust towards others.
Yes, he is. Fanfiction often delves deeper into the idea of Severus Snape's connection to Hogwarts. Since he dedicated his life to the school in different ways in the original story, fanfic creators expand on this. They might write about him being magically bound to Hogwarts, where he can't stray too far from the castle grounds. This could be because of a spell he cast himself, or as a result of some ancient magic related to his role at the school.
One possibility is that Harry grows up in the Muggle world completely unaware of his wizarding heritage. He might lead a normal life, going to a regular school, making Muggle friends, and having no idea about the magical world that could have been his. Maybe he has a natural aptitude for something like martial arts or a particular academic subject that in the wizarding world would be replaced by magic.
An interesting plot might be Snape's journey to fully understand what it means to be the heir of Hogwarts. He could start having strange dreams or visions related to the founders of Hogwarts. As he delves deeper, he uncovers secrets about the school's past that not only change his view of Hogwarts but also of himself. This new knowledge could also impact his relationships with the students and other teachers, as he realizes he has a greater responsibility towards the school than he initially thought.
One possible plot could be that Harry Potter discovers a different magical school. Maybe he stumbles upon a hidden school in the Muggle world that has been secretly teaching magic. He could form new friendships and face different types of magical challenges there. It would be a completely new magical experience for him, away from the familiar Hogwarts environment.
Perhaps she discovers a different magical school or a secret magical community outside of the Hogwarts system. In this fanfiction, she could be mentored by an eccentric and powerful wizard who has his own way of teaching magic, far removed from the traditional Hogwarts curriculum.
In fanfiction, one reason could be his desire for a fresh start away from the memories at Hogwarts. Maybe he feels he has done all he can there and wants to explore new magical knowledge elsewhere.
The Hogwarts staff would also be affected. There could be a shift in power dynamics. Maybe some characters who were in his shadow get a chance to shine, while others might struggle to fill the role he played in maintaining a certain level of order and mystery in the school. For example, his departure could make it easier for some to implement new teaching methods, but at the same time, it could also expose weaknesses in the school's security as he was very knowledgeable about the Dark Arts.
Snape would likely become more confident in his place at Hogwarts. As the heir, he has a new - found sense of belonging that could soften his harsh exterior. He might be more open to helping students, especially those who show an interest in the history of Hogwarts.
A really interesting plot twist could be that Snape discovers a new form of magic. Since he's not involved with Voldemort's dark arts, he has more time and mental energy to explore other areas of magic. Maybe he stumbles upon a long - lost magic that can counteract the most powerful dark curses. This discovery could change the balance of power in the wizarding world, making it so that Voldemort's rise is not as inevitable as it seemed in the original story.