It depends on what year(s) you are talking about. In all of Harry Potter's school years, Professor McGonagall was the Headmistress. Except for Harry 5th year, when Dolores Umbridge became Headmistress but was fired shortly after.
In the Harry Potter books, Albus Dumbledore is the headmaster and Minerva McGongall was the deputy headmistress. Twice during the series, McGongall became acting headmistress, once in the 1992-1993 school year when Dumbledore was removed by the Board of Governors and once in the 1996-19997 school year after his death. In the 1997-1998 Severus Snape was appointed as the headmaster. It is not known who filled the position after that, although J.K Rowling has stated that it was not McGongall.
A Scotish accent. It just sounds different because everyone else basically has an English accent.
In movies 1-5 she just helps to keep the school and students in order when bad things happen, she is head of Gryffindor in Hogwarts. At the end of 6 she helps to fight and at the end of seven she helps to hide Harry then to evacuate the students before joining the fight with all the of age students which are mainly the seventh graders
Hogwarts exists only in the Harry Potter series.
The Hogwarts gamekeeper (also known as the Hogwarts groundskeeper) is a Wizard employed by Hogwarts School of Witchcraft and Wizardry to tend to and look after the grounds of the school, as well as the security of Hogwarts Castle. It is Rubeus Hagrid.
she becomes the headmistress at hogwarts!
She becomes Headmistress of Hogwarts then retires.
She is Acting Headmistress for a short while in 1997; we don't if after the Final Battle she becomes Headmistress or not.
Minerva McGonagall becomes Headmistress.
She is a professor of Hogwarts (teaches transfiguration), Head of House Gryffindor, Deputy Headmistress.
After the Battle at Hogwarts, Minerva McGonagall steps into the role of Headmistress for the Hogwarts School of Witchcraft and Wizardry. According to J.K. she remained there until she retired.
Minerva McGonagall becomes headmistress and all the other teachers keep the same positions, except of course for the Carrows.
Albus Dumbledore was the Headmaster of Hogwarts in Harry Potter and the Philosopher's Stone. Minerva McGonagall was the Deputy Headmistress.
With the conclusion of the war, Minerva returned to the position of Headmistress of Hogwarts. She was the headmistress until at least 2008, as she gave permission for Dumbledore's notes on "The Tales of Beedle the Bard" to be published. It is possible she was responsible for the employment of former Gryffindor student Neville Longbottom as the new teacher for Herbology.Minerva had retired by 2017, when Harry's second son began attending Hogwarts.
Minerva McGonagall temporarily takes over as Hogwarts' headmistress during the final battle in the Battle of Hogwarts after Severus Snape is killed.
You mean right now, in 2010? We don't know, Minerva McGonagall might be still serving as Headmistress, or she might have retired, there is no way to tell.
The person who is in a charge of a school is the principal, headmaster, or headmistress, depending on the type of school.