First Year.

"No need to ask who you are. My father told me all the Weasleys have red hair, freckles and more children than they can afford." —Draco Malfoy meeting Ron for the first time. 

Ron began attending Hogwarts School of Witchcraft and Wizardry in1991 at the customary age of eleven. Ron was sorted into Gryffindor House, like every other member of His family.

Ron and Harry also first met Hermione Granger on the train but did not particularly like her. Ron, especially, was annoyed by what he saw as Hermione showing off her knowledge of magic, such as when she corrected him on the pronunciation of the incantation'Wingardium Leviosa'. Talking to Harry prior to the Halloween feast he insulted her. Unfortunately, she overheard and went running to the girl's bathroom in tears. That evening, during the holiday feast, it was announced that a troll was loose in the school. Ron and Harry came to Hermione's rescue after hearing that she was in trouble, an idea originally suggested by Harry, and she, in return, lied to protect them from the professors.

During their first year, the three of them learned that thePhilosopher's Stone was being hidden in Hogwarts and sought to protect it from being acquired by Severus Snape, who the young wizards believed to be working for Lord Voldemort. It turned out that Quirinus Quirrell was actually acting on behalf of Lord Voldemort. Ron's talent in Wizard's Chess, owed to an old and battered chess set that was passed to him from a grandfather, became a life-saving asset when the trio came to Professor McGonagall's contribution to the protection of the Philosopher's Stone. During the life-sized game of Wizard's Chess, Ron sacrificed himself as a game piece so Harry could place the enemy king in checkmate, allowing Harry and Hermione to move on. Ultimately, the three succeeded in defeating Quirrell and protecting the Philosopher's Stone, and Ron was awarded 50 House points by Albus Dumbledore for "the best played game of chess that Hogwarts has seen these many years," contributing to Gryffindor winning the House Cup for the first time in seven years, something that greatly pleased his brother Percy.

Harry,Ron and Hermione leaving hogwarts towards the end of their first year.