By the beginning of her sixth year, Lavender had developed a crush on Ron Weasley.
" — but unfortunately she had now decided to forgive Harry this lapse of memory and was keen to have lots of in-depth chats with him about Ron's feelings, a most uncomfortable experience that Harry would have happily forgone." In her third year, she began studying Divination, which she was fascinated by, and became friendly with Professor Sybill Trelawney, whom she respected a great deal.
In her fifth year, Lavender joined Dumbledore's Army, an organisation taught and led by Harry Potter, despite initially doubting Harry's claims that Lord Voldemort had returned.
Lavender attended Professor Lockhart's Duelling Club, and when Lockhart was disarmed by Professor Snape, she handed him back his wand.
It is likely that Lavender, given her common nature had a crush on Professor Lockhart, as did many of the other female students even including Hermione Granger, and would be shocked to discover he was a fraud at the end of the year.
Hermione pointed out that Lavender could not possibly have dreaded something unexpected and that the death must have happened days before the news arrived, but Lavender had faith in Trelawney's abilities and was upset by Hermione's rather tactless attempt at comforting her.
During her fourth year, Hogwarts hosted the Triwizard Tournament, a series of challenges for wizards to enter if they believed themselves capable.Later that year, Barty Crouch Jr, in disguise as Defence Against the Dark Arts professor Alastor Moody, used the Imperius Curse on her in class, thus forcing her to humiliate herself publicly by imitating a squirrel.Hermione Granger was not impressed that Barty Crouch Jr had the nerve to teach the three Unforgivable Curses in school and was appalled when he demonstrated them on students.Lavender began attending Hogwarts in 1991, the same year as famous wizard Harry Potter, at the age of eleven and was the first of the first years to be Sorted into Gryffindor House.She shared a dormitory with Hermione Granger, Parvati Patil, and other two girls and soon became best friends with Parvati.Ron broke up wit Lavender, but it was never made official that he started dating Hermione...