Yes, Ozian universities have proms as far as this story is concerned.
"It's so peaceful without Galinda around." Fiyero commented as he entered Elphaba's dorm room in the westtern building of Shiz University. He promptly crumpled onto her bed and sprawled out.
Pushing him over to make room for herself, Elphaba replied. "I won't say it hasn't been relaxing, except for when she barges in squealing about how much of a G-E-N-I-O-S she is." Elphaba shook her head. "I don't have the heart to tell her she's been spelling genius wrong." She grimaced. "Ever since this whole prom thing started she's been out with Avaric every day." Fiyero tensed and she looked at him with concern. "What's wrong?"
He gritted his teeth. "Nothing."
"Okay." Elphaba shrugged and pulled a book from her night table.
"Wait, wait, wait!" Fiyero rushed, pulling her back to face him. "You're supposed to bother me until I answer you! That's how it works!"
Elphaba glared at him and said in an even monotone. "My dear Fiyero, you must tell me what is bothering you. How will I ever survive knowing that something is keeping your tender soul in a state of unrest?"
"That's more like it...I think." Fiyero grinned and then said sadly. "It's just, every night Avaric comes into the dorm all tired and complaining about Galinda and the campaign and I just think..." He trailed off.
"YOU WANT TO BE PROM KING?" Elphaba exclaimed incredulously. She bit her lip to prevent the giggles that were dying to escape.
"No!" Fiyero argued weakly. "No..." He repeated.
"Aw, that's cute!" She teased.
"Cute!" Fiyero scoffed. "I am many things. Handsome, dashing, irresistible, beautiful, attractive, striking, gorgeous, fetching, good-looking, eye-catching and stunning, but I am NOT cute."
"Fiyero, you are throwing a fit over a plastic crown." She responded plainly.
"You're telling me you don't want the glory of being crowned the most popular person in school?" He asked.
"NO!" She replied furiously. "What kind of person would want-"
She was interrupted when the door was thrown open and someone shouted. "VOTE GALINDAVRIC 2011! GALINDAVRIC AS YOUR FUTURE PROM COUPLE!"
Elphaba rested her face in her hands. "Galinda, you've done this every day for the past week. We know you're running and we're voting for you."
"Well...I wouldn't say that." Fiyero said hesitantly.
"EXSQUEEZE ME!" Galinda shouted. "FIYERO TIGGULAR YOU ARE VOTING FOR US IF I HAVE TO DRAG YOU BY THE HAIR INTO THE BOOTH!"
"I just thought that maybe there is someone more deserving than you two." He looked pointedly at Avaric, who was staring off into space, his arms loaded with posters and buttons.
The insult caught Avaric's attention. "Campus wants a natural beauty like me to win."
"What natural beauty?" Fiyero retorted.
"The natural beauty that has to wait half an hour for the bathroom while his roommate gels his hair." Avaric shot back, causing Elphaba to snicker from her position behind Fiyero. "And then I spend all day putting up posters with my face on it and have to meet nerds and Munchkins."
"I would hate to be you Avaric." Elphaba commented. "Suckered into this cruelty."
"It's not that bad." Galinda said absentmindedly, reapplying lip gloss in a mirror. "I'm going to look so good on prom night! The crown is calling my name." Her voice dropped to a whisper and she flailed her arms around. "Gaaaaaa-linda. Gaaaaa-linda."
Avaric sighed. "I wish it would call my name like that."
"That's not a very good prom king attitude. I'm not voting for you." Fiyero said dryly.
Galinda whirled around, her hands on her hips. "AND WHEN DID YOU DECIDE THAT?" She demanded.
"When I decided that Elphaba and I are running for prom monarchy." Fiyero said decisively.
"WHAT!" Galinda screamed.
"What?" Elphaba said, also shocked.
Avaric dismissed Fiyero's comment. "You're a joke Tiggular."
"I'm going to win." Fiyero said smugly. "And then we'll see who's a joke."
"One problem." Elphaba laid a hand on Fiyero's arm. "You don't have a partner."
Galinda and Avaric laughed. "He can't even get a partner." Galinda mocked.
Fiyero gestured to Elphaba. "My partner is right here."
"I'm not doing this!" Elphaba exclaimed. "It's humiliating and pointless and-" Fiyero looked at her pleadingly and she trailed off.
"Please." He begged. "For me?"
"Uhhh..." Elphaba hesitated and then relented. "But you owe me big time."
Fiyero was already waving his hands up and down in front of Galinda's angry expression. "Consider yourself beaten Gaaaaa-linda." He said arrogantly.
"Nice try." Galinda said, matching his arrogance. "But I have way more pull in this school than you."
"Oh really?" Fiyero said nonchalantly, crossing his arms. "I remember you being part of my pull." He looked at her pointedly. "Go back to your toddler beauty pageants. This is prom war."
"You talk the talk Tiggular, but can you walk the walk?" Galinda replied.
"You walk the walk Upland, but can you dance the dance?" Fiyero shot back.
"Well I'm going to beat you at the prom...the prom..." Galinda finished and then stalked out of the room. "Let's go Avaric. You have posters to hang; even though we don't have to because we're going to win."
Fiyero followed her out of the door. "Elphaba, we have to go register, although they should already know my name as reigning king of everything."
When Fiyero and Galinda were gone, Avaric looked at Elphaba haughtily. "Not suckered into it, huh?"
Elphaba walked ahead of him out of the door. "Don't be jealous because I'm going to win prom queen."
"I'm running for king." Avaric said irritably.
Holding up a hand to silence him, Elphaba said. "I know what I said."
To be honest I'm not aiming to become a writing prodigy with this story, I just really missed my humour genre, so read it, love it, hate it, review it do whatcha want, it'll be here anyway.