Just One of the Guys

Just One of the Guys is a 1985 comedy film, directed by Lisa Gottlieb. The film is marketed with the tagline Terri Griffith is about to go where no woman has gone before. It ranked number 48 on Entertainment Weeklys list of the 50 Best High School Movies. The film is a loose adaptation of William Shakespeares Twelfth Night.

With her parents out of town, Terry decides to remedy the situation. Enrolling at a rival high school, she enlists the help of her sexobsessed loudmouth little brother, Buddy Billy Jacoby and her best friend Denise Toni Hudson to disguise herself as a boy. Her brother and friend also help to keep tabs on her throughout the experiment. Along the way she meets Rick Morehouse Clayton Rohner, a goldhearted nerd who becomes her pet project. After helping him through an image makeover and encouraging him to start talking to girls which results in him taking the most popular girl in school out to the prom, Terry starts to fall for him.After many episodes in and out of school, including fending off a group of bullies led by bodybuilder Greg Tolan Billy Zabka, dealing with her real college boyfriend Kevin Leigh McCloskey and being set up on a blind date with a potential new girlfriend named Sandy Sherilyn Fenn, Terry manages to be accepted as one of the guys. However, she is stunned when she turns in an article and her teacher still criticizes her work, making Terry realize her gender and looks were never the issue. ........

Source: Wikipedia