LiaAqila
Nightmare in the Moon - Had their OC in the 2024 Derpibooru Collab.
Crystal Roseluck - Had their OC in the 2023 Derpibooru Collab.
Elements of Harmony - Had an OC in the 2022 Community Collab
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Twinkling Balloon - Took part in the 2021 community collab.
Ten years of changes - Celebrated the 10th anniversary of MLP:FiM!

Dashabetes!
@Ciaran  
so,the conclusion is…they’re 15-16 …case closed!  
*flutterhy gonna be 16 since she is 1 year older than pinkie pie…. XD
Thatoneguy453

@Background Pony #17EC  
I don’t think so. Around LOE, Ishi said the girls are between junior and senior year(junior) and says by FF, they were not seniors,so it’s end of junior year.
Background Pony #4F24
@DarkMetaKnight
 
“Forgotten Friendship” takes place after LOE. Ergo, it can take place over a year later.
Thatoneguy453

@Background Pony #2AA2  
Uh no, all the movies have taken place since one school year. In LOE, here:
 
Rarity: [sighs] I’m just after some R&R. The past year has all been a bit too much for my tastes.  
Pinkie Pie: I’ll say! We fought three evil sirens who tried to hypnotize everybody with their singing, one ridiculously competitive rival school, and two demon friends! [to Sunset and Twilight] Uh, heh-heh, no offense.
Background Pony #D1F6
@Background Pony #FBC8
 
As shown here, “Forgotten Friendship” takes place after the Fall play, which has to be after the Fall Formal, and at the end of the school year given their making yearbooks, and Summer because beach.
 
That works out to two school years, 1 3/4 years having passed since the first movie, Which happened around the Season 4 premiere and Summer Sun Celebration. If anyone interested.
 
Big Mac could have graduated by “Forgotten Friendship”, which would still leave everyone else undergrad. My impression is that freshman and senior refers to their first and last year in school as opposed to actual grade, and will stay that way until the writes decide otherwise.
Baby Doll

Needs more lip gloss
@Angrybrony  
Huh, what state are you?
Angrybrony
Rainbow Rocks 10th Anniversary: Adagio Dazzle - Celebrated the 10th anniversary of EQG Rainbow Rocks!
Nightmare in the Moon - Had their OC in the 2024 Derpibooru Collab.
Lunar Supporter - Helped forge New Lunar Republic's freedom in the face of the Solar Empire's oppressive tyrannical regime (April Fools 2023).
Roseluck - Had their OC in the 2023 Derpibooru Collab.
Perfect Pony Plot Provider - Uploader of 10+ images with 350 upvotes or more (Questionable/Explicit)
Elements of Harmony - Had an OC in the 2022 Community Collab
Non-Fungible Trixie -
Preenhub - We all know what you were up to this evening~
Twinkling Balloon - Took part in the 2021 community collab.
My Little Pony - 1992 Edition

🔥Sunset is best girl🔥
@Baby Doll  
most of the high schoolers i’ve met are 18.
tuypo1
Non-Fungible Trixie -

@Background Pony #B85D  
Won’t somebody think of the sexualy mature pixels.
Baby Doll

Needs more lip gloss
@Angrybrony  
I assume. Almost all of my graduating class was a bunch of seventeen year olds, and these girls seem to be seventeenish (except for Sunset because she’s undoubtedly older then them).
 
Why, do you have proof that they are?
Angrybrony
Rainbow Rocks 10th Anniversary: Adagio Dazzle - Celebrated the 10th anniversary of EQG Rainbow Rocks!
Nightmare in the Moon - Had their OC in the 2024 Derpibooru Collab.
Lunar Supporter - Helped forge New Lunar Republic's freedom in the face of the Solar Empire's oppressive tyrannical regime (April Fools 2023).
Roseluck - Had their OC in the 2023 Derpibooru Collab.
Perfect Pony Plot Provider - Uploader of 10+ images with 350 upvotes or more (Questionable/Explicit)
Elements of Harmony - Had an OC in the 2022 Community Collab
Non-Fungible Trixie -
Preenhub - We all know what you were up to this evening~
Twinkling Balloon - Took part in the 2021 community collab.
My Little Pony - 1992 Edition

🔥Sunset is best girl🔥
@Baby Doll  
can you prove me wrong?
Baby Doll

Needs more lip gloss
@Angrybrony  
How do you know they are 18?
Angrybrony
Rainbow Rocks 10th Anniversary: Adagio Dazzle - Celebrated the 10th anniversary of EQG Rainbow Rocks!
Nightmare in the Moon - Had their OC in the 2024 Derpibooru Collab.
Lunar Supporter - Helped forge New Lunar Republic's freedom in the face of the Solar Empire's oppressive tyrannical regime (April Fools 2023).
Roseluck - Had their OC in the 2023 Derpibooru Collab.
Perfect Pony Plot Provider - Uploader of 10+ images with 350 upvotes or more (Questionable/Explicit)
Elements of Harmony - Had an OC in the 2022 Community Collab
Non-Fungible Trixie -
Preenhub - We all know what you were up to this evening~
Twinkling Balloon - Took part in the 2021 community collab.
My Little Pony - 1992 Edition

🔥Sunset is best girl🔥
@Background Pony #B85D  
18 is legal.
Background Pony #6FD5
@Background Pony #FDE3  
I’m rooting for you! I really dislike how some fans sexualize the characters. For gosh’s sake, they are teenagers!
Baby Doll

Needs more lip gloss
Background Pony #4730
Oh goodie! now I can finally report everyone’s explicit fanart of EQG characters on Deviantart
 
full
tuypo1
Non-Fungible Trixie -

@ApplejackFan204  
Or they could just make good episodes for a change.
ApplejackFan204
Lunar Guardian - Earned a place among the ranks of the most loyal New Lunar Republic soldiers (April Fools 2023).
A Tale For The Ages - Celebrated MLP's 35th Anniversary and FiM's 8th Anniversary
Perfect Pony Plot Provider - Uploader of 10+ images with 350 upvotes or more (Questionable/Explicit)
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Awesome dude
@Hugobertington.Esq  
That’s what is wrong with the Simpsons today. They should’ve ended the show after the movie.
Haywireblaster
Wallet After Summer Sale -
Perfect Pony Plot Provider - Uploader of 10+ images with 350 upvotes or more (Questionable/Explicit)

@ApplejackFan204  
HAVE NO FEARS
 
WE’VE GOT STORIES FOR YEARS
ApplejackFan204
Lunar Guardian - Earned a place among the ranks of the most loyal New Lunar Republic soldiers (April Fools 2023).
A Tale For The Ages - Celebrated MLP's 35th Anniversary and FiM's 8th Anniversary
Perfect Pony Plot Provider - Uploader of 10+ images with 350 upvotes or more (Questionable/Explicit)
Fine Arts - Two hundred uploads with a score of over a hundred (Safe/Suggestive)

Awesome dude
Is this like the Simpsons? Where they’re going to be stuck in the same grade for all eternity?
tuypo1
Non-Fungible Trixie -

@Ciaran  
Ah so that’s why they don’t define the age. Makes sense.
mjangelvortex
Cutest Little Devil - Celebrated the 14th anniversary of MLP:FIM!
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Roseluck - Had their OC in the 2023 Derpibooru Collab.
King Sombra - Celebrated the 10th anniversary of The Crystal Empire!
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Tree of Harmony - Drew someone's OC for the 2022 Community Collab

Lady of Ships and Birbs
@Ciaran  
That explains another reason why they were vague with their ages/grades outside of the guess I made earlier.
Ciaran
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Crystal Roseluck - Had their OC in the 2023 Derpibooru Collab.

Senior Moderator
君場森生きる
Please keep in mind that the characters are “age appropriate”, and what that means varies across the planet Earth, where the show has to comply with many diverse media content policies.
 
If the studio defined the specific age of each character, then they would have to make the behaviors of the characters in the show comply with the media policies of every legal jurisdiction they want to broadcast in. Just by saying “This person is this many years old”, they might not be able to broadcast in some countries because of the character’s implied or demonstrated relationship with others.
 
So, they are the “appropriate” age for the activities that they participate in together. Some are shown as “older” and others are “less old”, but with Age Of Consent varying from country to country, and what age people are or aren’t usually in which schools, and what they call those layers, is less difficult to deal with.
 
For example, some want to define the characters as “Seniors” - but what is a “Senior” in every country where the programme airs?
 
In the Philippines school is K–6–4–2. In Japan it’s 6-3-3-4. In the US it might be K-4-4-4, or it might be K-5-3-4, or K-5-4-3, or K-6-3-3 … In the US “Seniors” are usually 17-18 years old and may not be legally able to date Sophomores. By contrast, in Japan “Seniors” may be anywhere from 14 to 18 depending on the school and how it structures what a “Senior” is and where the student begins college, and can legally date anyone in Junior High.
 
So, they’re “Age Appropriate”.
 
What that means largely depends on where you live on the planet Earth, and is defined by your country’s laws.
mjangelvortex
Cutest Little Devil - Celebrated the 14th anniversary of MLP:FIM!
Rainbow Rocks 10th Anniversary: Sonata Dusk - Celebrated the 10th anniversary of EQG Rainbow Rocks!
Pixel Perfection - I still call her Lightning Bolt
Silly Pony - Celebrated the 13th anniversary of MLP:FIM, and 40 years of MLP!
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Princess of Love - Extra special version for those who participated in the Canterlot Wedding 10th anniversary event by contributing art.
Tree of Harmony - Drew someone's OC for the 2022 Community Collab

Lady of Ships and Birbs
@tuypo1  
Yep. It’s basically like what happened with Twilight and Applejack. They’re teens in Equestria Girls but their older siblings are adults.
tuypo1
Non-Fungible Trixie -

@mjangelvortex  
Guess he is a teen. But yeah he really came across as adult.
mjangelvortex
Cutest Little Devil - Celebrated the 14th anniversary of MLP:FIM!
Rainbow Rocks 10th Anniversary: Sonata Dusk - Celebrated the 10th anniversary of EQG Rainbow Rocks!
Pixel Perfection - I still call her Lightning Bolt
Silly Pony - Celebrated the 13th anniversary of MLP:FIM, and 40 years of MLP!
Lunar Supporter - Helped forge New Lunar Republic's freedom in the face of the Solar Empire's oppressive tyrannical regime (April Fools 2023).
Roseluck - Had their OC in the 2023 Derpibooru Collab.
King Sombra - Celebrated the 10th anniversary of The Crystal Empire!
A Lovely Nightmare Night - Celebrated the 12th anniversary of MLP:FIM!
Princess of Love - Extra special version for those who participated in the Canterlot Wedding 10th anniversary event by contributing art.
Tree of Harmony - Drew someone's OC for the 2022 Community Collab

Lady of Ships and Birbs
@tuypo1  
I mean the book that was based on the movie script. Lots of movies have these kind of novelization books.
 
Here’s the source for proof. I can understand where you’re coming from since they did make it seem like he was an adult. They really botched writing him. They should have said he was a student from their school (or another school) to avoid making it seem like he was an adult.