Fluttershy yawned as she woke up. Her parents, Timid Shy and Clear Shy, had enrolled her in Equestria High School the previous day. She hadn't said anything, but she didn't think she was ready. Her whole life she'd been homeschooled, except when she was a filly and went to Summer Flight School with Rainbow Dash.
At least I'll know one pony... hopefully there'll be others I know... Fluttershy pushed a lock of her pink mane out of her face as she got out of bed, changing out of her pajamas and changing into a yellow shirt with a pink stripe at the base and a pink bow. She had a green skirt and put a white bow in her mane as she exited her room.
She brushed her mane and teeth as she got some cereal. She ate it before leaving.
Fluttershy got on the bus when it came. She barely recognized anyone. There was a dark pink maned girl, a purpley-black maned unicorn with a streak of pink in her mane, a purple maned unicorn, a yellow maned girl... the only person/pony she recognized was Rainbow Dash, who wore a hoodie with a scarf, like always.
Fluttershy sat next to her friend.
"Fluttershy, is that you?" Rainbow Dash asked. "I haven't seen you in forever!"
Fluttershy nodded as she looked around. "Who is everyone?"
"Hm? Oh, right! You don't know anypony!" Rainbow Dash exclaimed.
"The pink maned girl is Pinkie Pie. She's funny and always happy. The unicorn with the purpley mane is Twilight Sparkle. She's an egghead and is really smart. She's basically the only one of us who likes school. The purple maned unicorn is Rarity. She loves fashion. The yellow maned girl is Applejack. Me and her compete a lot 'cause we're so similar. There's some other people but they're not here. They walk or fly or drive to school." Rainbow Dash said. Fluttershy just looked at Rainbow Dash confused. The pegasus sighed. "I'll introduce you to everyone at school."
The bus screeched to a halt at school. The students poured out of the bus, as Fluttershy slowly flew out of the bus, Rainbow Dash in front of her.
"Hey! Dashie!" a high-pitched voice exclaimed. The pink maned girl - Pinkie Pie, was it? - waved a hoof at them.
"Pinkie! I have a friend to introduce you to!" Rainbow Dash exclaimed. She flew down. "Fluttershy, this is Pinkie Pie. Pinkie Pie, this is Fluttershy."
"It's nice to meet you Fluttershy!" Pinkie exclaimed. "Well we should probably get our schedules. I can tour you around school!"
Fluttershy followed Pinkie Pie in. Like Rainbow Dash said, she was very happy. She skipped into the school, bouncing as well. Her mane even seemed happy!
"Hello!" a teacher exclaimed. "I'm Cheerilee. I'm your homeroom teacher. Pinkie Pie, could you give Fluttershy a tour?"
"W - why her? No offense, but... I know Rainbow Dash well. We'd have something to actually talk about..." she fiddled with her hooves.
"Well I'm in the Welcome Committee! I'm also the only pony in the Welcome Committee!" Pinkie Pie exclaimed. "C'mon! When does class start?"
"In an hour or so. We want the new students to have time to go around the school. After this you also need to give a tour to Sweetie Belle, Scootaloo and Apple Bloom." Cheerilee said.
"Could I tour them? I might not be in the Welcome Committee but Scootaloo's basically my younger sister." Rainbow Dash said.
Pinkie Pie hopped away, taking Fluttershy's hoof. Fluttershy felt her face flush quickly, before the flush slowly faded but still sat on her face.
"Let's see... Ooh! I should probably show you the classroom!" Pinkie Pie exclaimed. She shifted her gaze over to Fluttershy. "Are you okay Flutters?"
F - Flutters? Fluttershy felt her face turn hot. Celestia why...Mmbmmfmm...
Fluttershy followed Pinkie Pie to the classroom, as Pinkie Pie put her saddlebag on her desk. "You should probably put your bag on your desk! Oh, look! Your desk is next to mine! And Dashie's is next to that! Squee! We can be partners! Squee!"
Fluttershy giggled. "Rainbow Dash was right when she said you were funny! You're a great friend Pinkie!"
"Thanks Flutters!" Pinkie Pie hugged her friend. "Is it okay if I call you Flutters? I know that Dashie does and I basically give all my friends nicknames. Twi, AJ, Rares, Dashie, you're Flutters..."
"And this is the Cafeteria!" Pinkie Pie exclaimed, dragging Fluttershy to the Cafeteria. "The Art Room! Band Room! Bathrooms! For some reason we have a Ballroom even though we basically never have dances... I mean there's the Fall Formal but that's about it... Anyways! And then there's the dormitories!"
"D - Dormitories?" Fluttershy stammered.
"Are you okay Flutters?" Pinkie asked.
"Yeah. Just sort of nervous... I don't know most of the ponies here!" Fluttershy exclaimed. "But I think I'll be fine... Especially if you can be my dormmate!"
"Oh Flutters! I hope you are! That'd be rooftastic! Heh hee!" Pinkie giggled. "Anyways, let's get to class!"
"Now we'll eventually do a project - choose two partners!" the teacher exclaimed.
"Flutters, Dashie!" Pinkie Pie exclaimed.
The Cutie Mark Crusaders partnered up - of course - and Dinky partnered with Alula - nicknamed Princess Erroria - and Noi.
"Class dismissed!" Cheerilee exclaimed. Fluttershy, Rainbow Dash and Pinkie Pie exited the classroom, as Pinkie hopped outside.
"We have some outside time before lunch! C'mon! Let's introduce Flutters to the others!" Pinkie grabbed her friends' hooves, pulling them outside quickly.
"We were on the other side of the hallway..." Fluttershy said. "How did she..?"
"Don't question Pinkie." Rainbow Dash shrugged, following as Pinkie hopped to three others. What were their names? Oh! Right! Applejack, Rarity and Twilight!
Fluttershy walked to the group, her wings laying comfy on her sides, although ready to open at any time.
"Hi Twi! AJ! Rares! This is Fluttershy!" Pinkie Pie exclaimed. "Flutters, these are Twilight Sparkle! Applejack! And Rarity!"
"Hi!" the group exclaimed.
"H - Hi!" Fluttershy exclaimed. "Well what do you guys wanna do?"
"Usually we just talk or sometimes play Truth or Dare." Applejack said. Rarity and Twilight nodded agreement.
"Well I'll go first! Fluttershy, truth or dare?!" Pinkie exclaimed.
Author's Note
So I've made all the Mane Six in Gacha Life so I'll use the outfits they have as the outfits they wear in the story. Just FYI.
Twilight isn't an alicorn in this story. The Cutie Mark Crusaders are in school but they're only freshmen, where as the Mane Six are... uh... the middle grade in high school. Idk what it's called. 
Sorry about Rainbow's wall of text. I'm having way too much fun with this fic.
Classes will probably not be shown much. Like... as much as they're shown in Equestria Girls. So... like... never.
Don't ask why the Freshmen (CMCs) and the middle grade in high school (Pinkie, Dashie and Flutters) are in the same class. ~~Probably the same reason why in Yandere Simulator Hanako eventually goes to Akademi even though she's Senpai's~~ younger ~~brother. Yes I like Yandere Simulator. Don't judge me.~~