Dear Princess Twilight, now you understand how I felt when I teached when you were a filly yourself. But I enjoyed each and every moment with you and you should too with them. It's important at their age to have a very good teacher to help and teach them the best way possible so they can grow and keep that thirst for knowledge and that confidence you help them develop for themselves.
Cherish every moment and be very forgiving. But prepare yourself for stubborness from their part. Remember someone?
Think li'l Twilight was a handful as a foal? Hard to imagine the bookworm who needs an order from Celestia herself to go get some fresh air and talk to people getting up to CMC-level chaos, but if she did, well... maybe there's a reason it took nothing short of Cadence to babysit her.
About four hours and counting. Containing Fillies and Countering Colts, a Reference Guide for Mothers and Foalsitters, lays abandoned on the floor, even books have failed her, so she resigns herself to her fate.