Chapter 1-

Once upon a time in the year 990 A.D. There were four people. Two were wizards and two were witches. They came together to make a school for magic. These four founders divided themselves into groups, one for the brave, one for the wise, one for the ambitious and one for the kind. Godric Gryffindor founded the house of Gryffindor, the house for the brave and courageous. Rowena Ravenclaw founded the house of Ravenclaw, the house for the wise and smart. Salazar Slytherin founded the house of Slytherin, the house for the ambitious and pure-bloods. Helga Hufflepuff founded the house of Hufflepuff, the house for the kind and patient. 

They made this school with a repellent to muggles. For them it looks like an abandoned, ruined castle with a sign saying “Keep Out”. All was well in the castle, until one day Salzar told the other founders that he did not trust muggle-borns or mudbloods as he called them. He said that they shouldn’t be allowed in the school. However the other members disagreed that muggle-borns were fine. At that statement Salazar created a room hidden to all others and only his true heir could open. He called it the Chamber of Secrets, and after that he left. 

After this the four other members continued to teach without him present.