School continued as usual for Jacob. He continued to prank Umbridge and enjoyed the rest of his classes. When Professor Dumbledore left the school and Umbridge appointed herself headmistress, Jacob realized he could once again set her on fire. He was always careful to control the fire so that she will feel it and fear it but not get burned. Of course, he modified her memory at the end of each class.
Jacob was very disappointed when Fred and George left school. He wished he could go with them but knew he couldn't since he was still underage. He eagerly continued the prank war. He sat in Umbridge's class for all first through fourth years except Slytherin, figuring the older students could control Umbridge the same way he could, and Slytherin would not appreciate his antics. He occasionally had Umbridge walk around the school singing her "I am an idiot" song. He enjoyed his prank war and was disappointed when the school year ended, although he was happy Professor Dumbledore was back.
The next year, some of the prefects were from Jacob's year. Jacob felt funny sitting with them as if they needed to baby-sit him. Anthony took him away as soon as he was able to, and Jacob sat with Anthony, Michael, and Terry for the rest of the trip.
Jacob wasn't sure what to think of Professor Slughorn. While he noticed that Jacob's potions were always perfect, he seemed weirded out by Jacob's differences. Jacob enjoyed having Professor Snape for Defense Against Dark Arts. Of course, Jacob was able to do everything easily, and when they were paired up to practice hexes, nobody wanted to be Jacob's victim. Professor Snape solved the problem by setting up a rotation so that everyone will have a turn against Jacob. He explained that because Jacob is so advanced, whoever is paired with him that day will learn a lot more than anyone else.
The year passed quickly until Professor Dumbledore's death at the end of the year. Jacob didn't bother going to the funeral, however, when he heard the phoenix sing, he started crying and couldn't stop. The other Ravenclaws were teary eyed too when they returned from the funeral, but Jacob sobbed uncontrollably for a long time.
The next year was unlike any year Jacob ever had. When he boarded the Hogwarts Express, Draco Malfoy said, "You're going to regret coming, mudblood."
Jacob had his wand ready and he used it.
"Oh, that's right," Malfoy said. "Your father is one of the dark Lord's top supporters. You'll love all the changes that are happening now."
Anthony removed Jacob from the compartment as soon as he was able to.
"This year will be difficult," Anthony told him. "There are laws against muggleborns. Most muggle born students are in hiding. I know you are good at planting false memories, but I'm concerned about your safety."
"I'll take care of myself," Jacob said.
"Will you take care of everyone else too?" asked Terry.
"If I have to," said Jacob.
In the great hall, the Carrows asked each student for their blood status. When they got up to Jacob, he didn't bother answering. He simply waved his wand.
"I know who you are!" one of the Carrows exclaimed. "You're father is close to the minister of magic!"
The professors exchanged amused looks. Professor Snape sat passively watching everything going on. As the muggle born first years were removed from the great hall, Luna asked Jacob if he could do something about it.
"This is a little too complex," Jacob said. "The world's biggest idiot is expecting the muggle borns tonight. Even if I do memory charms on the Carrows, someone else will come for them. We're not ready for a full fight yet."
"Could you at least do an idiot performance?" asked Michael.
Jacob flicked his wand and watched both Professor Carrows walk around the hall chanting, "We are idiots."
The Slytherins ran over, trying to stop him, but ended up forming a procession behind the Carrows and joining the chanting. Professor Snape sat impassively at the head table.
"What about Snape?" asked Michael.
"He's okay," Jacob said.
"No he isn't," insisted Michael. "He killed Dumbledore."
"He's not trying to stop me," said Jacob.
"That's because he knows what you would do to him," said Luna.
"I would never hurt Professor Snape," said Jacob. "He's the only professor who noticed I am a person with feelings."
After the procession circled the great hall several times, Jacob lifted the curse and modified memories.
"Do Snape," urged Terry.
"I trust him," insisted Jacob.
Instead of taking all his classes, Jacob spent as much time as possible in Dark Arts (no longer called defense). He knew he couldn't be there when the Slytherins were there, and sixth and seventh years took all houses together since not many students took it on a NEWT level, but he did his best to protect first through fifth years in the three good houses. Professor Carrow wanted students to practice the cruciatus curse on students who earned detentions, mostly Gryffindors. Jacob changed it so that everyone practiced hexes of their choice on Carrow. He also occasionally did the "I am an idiot" routine to keep his fellow students amused. Students still suffered terribly that year. The Carrows often gave detentions during sixth and seventh year classes thinking that the curses would be more powerful. The Slytherins enjoyed the power they had to torture other students. Jacob did his best to keep as many people safe as possible, but recognized the limitations on his powers. None of the professors made any effort to stop Jacob although they all wondered why Professor Snape didn't try to rein him in. It was a long year, and Jacob was relieved when it was finally time for the famous battle of Hogwarts.
Jacob sat calmly at his table as younger students and Slytherins were led to safety. He knew he would fight a good fight and hoped to take down Voldermort. As soon as the fighting began, he ran out setting as many death eaters on fire as possible. He did not stay to watch how many put out the fires themselves, how many were rescued, or how many died. He kept on going until he reached the Whomping Willow. It took a while for Jacob to enter the passage to the Shrieking Shack. He kept getting stopped by death eaters and had to do hexes other than his fire hexes as too many death eaters were able to put out the fire. He eventually made his way over to where Voldermort was talking to Professor Snape. He quickly set Voldermort on fire. Voldermort easily put out the fire and tried to crucio Jacob. Jacob dodged the curse and tried the imperious curse.
"Who is this brat?" Voldermort yelled at Snape. "Can't you control him?"
"Stupefy," yelled Professor Snape. But instead of doing a stunning spell, he made Jacob invisible. Jacob watched Voldermort kill Professor Snape. He watched silently as Snape gave his memories to Harry. Finally, he sat down next to his dying professor.
"I'm going to change," Jacob said quietly using his mirror. "I'm going home, and I'm only going to use my mirror when I have to. I will repeat what the mirror says so I can learn to speak correctly. I will take all my therapies seriously and learn to read and write.
"The last six years were fun, but this isn't really what life is about. Sure, I love hexing professors, but what good is that? What difference does it make in this world? You told me I was talented, but what use is my talents? You said I will be successful, but how can I be if I can't talk, read or write? I'm going back to a muggle lifestyle and muggle therapies. It's the only way I can be successful, and if living well is the best revenge, I need an amazing life."
Jacob watched as he became visible again as Professor Snape died. He apparated back home and told his parents his plans. He enrolled in speech therapy five times a week and with lots of hard work learned to speak as clearly as everyone else by the end of the summer. The next year, he focused on increasing his vocabulary and using complex sentences. When he mastered that, he learned to read and write. Finally, he invested himself in learning all the skills he can for the profession of his choice, however, I cannot tell you what that profession is, since Jacob is my six-year-old son, and this whole story is a tired mommy wishing for a way to magically make life easier for her special child before finally accepting that it will take a lot of hard work to help 'Jacob' reach his full potential. Thank you for reading, and thank you to my neurotypical eight-year-old for pressuring me to write this story.