#298326
Sun, 4th Nov '12 11:36:38 AM
from South Africa
I see it as this way. Applejack is the oldest. She was a late bloomer in getting her cutie mark and th others said nothing about being a late bloomer. She's also one of the most mature.
Fluttershy is second oldest. She was already starting to grow into her awkward teen body and we have confirmation that she's older than Pinkie.
Rainbow Dash is the youngest. She was first in her class to earn a cutie mark. Making her an early bloomer. Fluttershy probably was in a higher year and failed a year. Rainbow is also more immature.
Pinkie is second youngest. Her sisters hadn't earned cutie marks yet and she's morem immature. We also know that she's younger than Fluttershy, but only by a year. She's also still an apprentice.
Rarity is third oldest. She was already in a responsible position in school and is one of the more mature. She also earned hers old enough to start worrying about when she'd get hers. She's also a succesful businessmare already.
Twilight is third youngest. She was trying to get into school making her likely younger than Rarity and Fluttershy. Yet if she was too young compared to the others, it would suggest that most who attend Celestia's school don't have cutie marks which would be strange from what we've seen. She's also more mature than Rainbow and Pinkie and appears to have completed at least one degree.
Unity of the Sun Mare