Sky High is a 2005 movie from Walt Disney Pictures, starring Kurt Russell.

Plot
This movie is about superheroes.  Will Stronghold has two superhero parents.  His dad, Steve, is The Commander, who is very strong.  His mother, Josie, is Jetstream, who can fly.  Will is expected to have great powers of his own, but he finds that he does not have any.  He enters his school, Sky High, where the students are sorted into "hero" and "sidekick."  Will is given the position of a sidekick and takes different classes than the hero track.  He later tells his dad about this, who is not happy that his son will not be like him.

At school, Will also has an enemy named Warren Peace.  The Commander put Warren's father away for three life terms.  During a lunch, Warren gets very mad at Will and starts throwing fireballs, which is his superpower.  Will dives under a bench.  It is here his power comes to him; super strength, like his dad.  He manages to defeat Warren and both are put in a time out room where their powers do not work.  His mother is not happy, but his dad is very happy that Will has powers.  Steve shows Will the hiding place where the Stronghold family does all of their activities.

Will's new powers put him up in the hero track, where he is partnered with a girl named Gwen Grayson.  Will soon falls for Gwen and does not keep up with the friends he made as a sidekick.  Will has an old friend named Layla, whose power is to grow plants.  Will gets more popular.  Gwen gets him to invite all the popular kids for a party.  When Layla comes over to tell Will that she loves him, Gwen stops her and tells her that Will has new friends.  Layla is upset.  When Will learns about it, he breaks off the date.  He was going to go to the prom with Gwen, but now decides to stay home.

His parents go to the prom instead.  There was going to be a ceremony to honor the best superhero of all time.  During the prom, however, it is revealed that Gwen is really a villain named Royal Pain.  The Commander thought he killed her off, but when he zapped her, she simply became a baby instead.  The years passed and she grew into another teenager.  Royal Pain puts on her suit and uses her weapon to make everyone become babies.

Will comes on down to the school.  He is very sorry for how he acted as a hero and tells his sidekick friends that he needs all of their help to beat Royal Pain.  Lash and Speed, two bullies on Royal Pain's side, are knocked out.  Ethan tricks Lash and stuffs his head down the toliet.  Then he becomes a puddle of ooze, which causes Speed to slip.  Warren, now on Will's side, throws fireballs to knock Speed down.  

Magenta, whose power is to become a rat, climbs into the system and tries to disable it, otherwise the school will fall from orbit and everyone will die.  Penny, a cheerleader who can make multiple copies of herself, surrounds Layla.  Layla does not want to fight, but when they hit her, she uses her power to make all the plants come out and bind the cheerleaders down.

Will finds Royal Pain outside.  She has loaded all the babies onto the bus and will retrain them to be bad people.  He tells her to put his father down.  They fight.  Will is winning when Layla bursts in, distracting Will.  Royal Pain manages to throw Will out of the window.  All seems lost when Will appears in the window – he too has Josie's power of flying.  He then kicks Royal Pain out of the window.  The school begins to fall down.  Will goes outside and uses his power to try to keep the school from hitting the ground.  Magneta cuts the wire in time and saves the school from crashing into the ground.

Steve and Josie give their award to all of the sidekicks that helped out.  All of the villains re put into the time-out room. As Will and Layla become a couple, the final narration states that Ron Wilson became a superhero after falling into a vat of toxic waste, Will and Warren became best friends and Sue and her henchmen are now Will's archenemies.

Other websites 

Disney's official Sky High site

Cast
 Michael Angarano as William "Will" Theodore Stronghold, a freshman at Sky High, whose parents are the two most famous superheroes — Commander and Jetstream — as well as Maxville's top real estate agents in their secret identities. His super strength, inherited from his father, and his ability to fly, inherited from his mother, start as inactive and gradually manifest over the film.
 Danielle Panabaker as Layla Williams, Will's childhood best friend and eventual love interest/girlfriend, who is a pacifist vegetarian and is able to animate and control plant life. Her mother's abilities are said to allow her to talk to animals and her father is a normal human.
 Mary Elizabeth Winstead as Gwendolyn "Gwen" Grayson / Royal Pain (suit actress) / Susan "Sue" Tenny, a senior at Sky High whom Will, along with everyone else, falls in love with. Her power is technopathy. Winstead said of her role, "I bounced around. I was either the hero of the sidekicks or the sidekick to the heroes." When she attended Sky High the first time, no one understood her class of powers and she was slated as a sidekick and a weirdo, eventually turning into a supervillain. An accident with the "Pacifier" de-aged her during a battle with The Commander.
 Patrick Warburton provides the voice of Gwen in her Royal Pain suit. Winstead also serves as the suit actress of Gwen in her Royal Pain suit.
 Steven Strait as Warren Peace, the son of an unnamed superheroine and a supervillain known as Baron Battle who is in jail with four life sentences. He is pyrokinetic. Warren is a high school outcast who tries to lead a decent life, but is often misunderstood due to being a son of a felonious father. His name is a pun of the novel, War and Peace. 
 Dee Jay Daniels as Ethan Bank, a sidekick and one of Will's friends who can melt into a fluid (which earned him the nickname "Popsicle").
 Kelly Vitz as Magenta "Maj" Lewis, one of Will's friends who shapeshifts into a guinea pig with purple highlights and streaks in her fur. 
 Nicholas Braun as Zachary "Zach" Braun / Zack Attack, Will's childhood friend who has the latent ability to glow in the dark.
 Malika Haqq and Khadijah Haqq as Penny Lent, Gwen's best friend who duplicates herself and is naturally athletic.
 Jake Sandvig as Lash, a skinny bully at Sky High who has elasticity.
 Will Harris as Speed, an overweight bully at Sky High who can run at an extremely high speed.
 Lynda Carter as Principal Powers, the principal of Sky High who has the power to change into a luminous energy form resembling a comet and back at will. Her catchphrase is "Comets away". 
 Bruce Campbell as Tommy Boomowski / Coach Boomer / Sonic Boom, the gym teacher at Sky High who has his ability to release sonic waves from his vocal cords which can be listed as sonic screaming. His real name is listed as Tommy Boomowski in the Commander's Sky High Yearbook. Coach Boomer's job is to sort the superheroes from the sidekicks and oversee the civilian rescue exercise.
 Kevin Heffernan as Ron Wilson, Sky High's good-hearted bus driver. He is the offspring of two super-powered parents, just like Will Stronghold is the offspring of the Commander and Jetstream, but does not have any powers. He feels a great sense of pride in driving the "superheroes of tomorrow" to school. It is revealed at the end of the film that he fell into a vat of toxic waste, gaining superpowers of his own.
 Kurt Russell as Steve Stronghold / The Commander, Will's father who is one of the world's strongest superheroes, displaying superhuman strength and invulnerability, and is a successful businessman in his secret identity. In a deleted scene, it is revealed that Steve was an investigative reporter who seeks to change his career before becoming a real estate agent.
 Kelly Preston as Josie DeMarco-Stronghold / Jetstream, Will's mother and a successful real estate agent. As Jetstream, she uses the power of supersonic flight; she is also touted as being an expert in hand-to-hand combat.
 Cloris Leachman as Nurse Spex, a kind and eccentric elderly lady that serves as Sky High's single known school nurse, with the ability of x-ray vision. She is the one who tells Will that not everybody gets powers even if they are the child of two superheroes.
 Jim Rash as Mr. Grayson / Stitches, Royal Pain's bumbling cackling sidekick. He raised her as his daughter after she was turned into a baby by the "Pacifier".
 Dave Foley as Jonathan Boy / All-American Boy, The Commander's old sidekick who works as Hero Support teacher at Sky High.
 Kevin McDonald as Professor Medulla, The Mad Science teacher with a hyper-advanced (and oversized) brain, which grants him advanced intelligence, creativity and a multitude of genius-level skills.
 Kim Rhodes as Professor Jeannie Elast / Elastic Girl, a girl who has the talent to twist her body into anything she wants. Her character was never shown in the final cut of the film.
 Tom Kenny and Jill Talley as Mr. and Mrs. Chester Timmerman, a couple who witnesses Will prevent Sky High from falling on their new home.
 Loren Berman as Larry, a nerdy boy who can turn into a rock monster.
 Dustin Ingram as Carbon Copy Kid, a boy that can make himself look like anyone.
 Nicole Malgarini as Freeze Girl, a girl with cryokinetic powers.

References

2000s superhero movies
2005 movies
American family movies
American superhero movies
Disney movies