Every parenting forum will tell you a different age. Two. Two and a half. Three. The truth: there's no universally right age, only readiness signs. Here's what we actually watch for in our preschool room before we start partnering with parents on potty training.
1. They notice when their diaper is wet or dirty.
Sounds obvious. It isn't. A child who's potty-ready will tug at their diaper, tell you they pooped, or ask for a change. That awareness of bodily sensation is the foundation. Without it, training is just adults guessing on a schedule.
2. They can stay dry for 2+ hours at a stretch.
Bladder control develops on its own timeline. Once your child is consistently waking up dry from naps or going long stretches without needing a change, the physical machinery is ready.
3. They show interest in the bathroom.
Following you in. Asking what you're doing. Wanting to sit on the toilet themselves. That curiosity is gold — it's the easiest doorway into training.
4. They can pull pants up and down.
Underrated. A child who can't manage their own clothes will get frustrated fast. Test it: can they pull on stretchy pants by themselves? If yes, you're closer than you think.
5. They can follow a 2-step instruction.
"Go get your shoes and bring them to me." If they can do that consistently, they can follow the sequence of pulling down pants, sitting, wiping, and washing hands.
What to do the week you start
Pick a week when nothing else is changing — no new sibling, no move, no travel, no first week at a new school. Then keep it boring and consistent. Same words at home and at school (we’ll use yours). Trips to the potty at the natural moments: after waking, before and after meals, before you leave the house. Easy clothes, nothing with snaps or belts. Celebrate the tries, not just the successes, and treat accidents as information (“next time we’ll go a little sooner”), not as a setback. Most children need a few weeks of this rhythm before it feels automatic, and that’s normal.
When it’s smarter to wait
If your child is only showing one or two of the five signs, waiting a month or two usually costs nothing and saves everyone a lot of frustration. The same is true if you’re in the middle of a big transition, or if your child is actively resisting — digging in against the potty is a sign to pause and try again later, not to push harder. Readiness isn’t a race; a child who starts a little later and finishes in two weeks is in a better spot than one who started early and has been stressed about it for three months. If you have questions about your child’s development, your pediatrician is the right call.
How we handle it at school
In our toddler rooms, potty training is a partnership, never a surprise. When you tell us you’re starting, we match your words, your routine, and your timing. Teachers build in the same natural potty moments during the day, send a Brightwheel note so you know how it went, and keep the tone light — no pressure, no shaming, and no comparing one child to another. Some of our toddler classrooms are set up specifically for children who are potty-trained, with child-height bathrooms and sinks, so the transition from diapers to “big kid” is part of the room, not an interruption to it.