Most preschools will start accepting children at around age 2 ½, but that doesn’t mean your child is magically ready for preschool when he reaches that age.

Readiness for preschool has more to do with where your child is developmentally. Is he socially, emotionally, physically, and cognitively ready to participate in a daily, structured, educational program with a group of other children? Is your child fairly independent? Preschool requires children to have certain basic skills. Most preschools will want your child to be potty-trained, for instance. Your child should also be able to take care of some other basic needs, like washing his hands after painting, eating his lunch without assistance, and sleeping alone.

Has he spent time away from you?
If your child has been cared for by a babysitter or a relative, he’ll be better prepared to separate from you when he’s at preschool. Kids who are used to being apart from their parents often bounce right into preschool with hardly a backward glance. If your child hasn’t had many opportunities to be away from you, you might want to schedule some — a weekend with grandma, for instance, or a day with your sister and her kids.

But even if you can’t work out your separation issues up front, don’t worry too much. Many children leave Mom or Dad for the first time to go to preschool and they do just fine.

The trick is to help your child adjust in short doses. Many preschools will allow you to drop off your child for an hour or two during his first few days there. As your child gets used to his new environment, let him gradually work up to a full day.

Can he work on projects on his own?
Preschool usually involves lots of projects that require concentration and the ability to focus on an individual task. If your child likes to draw at home or gets engrossed in puzzles and other activities on his own, he’s a good candidate for preschool. But even if he’s the kind of child who asks for help with everything, you can start getting him ready by setting up playtimes where he can entertain himself for a half hour or so. While you wash the dishes, encourage him to play with playdough alone, for example.

Gradually build up to longer stretches of solo play. Your goal here is to keep yourself moderately preoccupied with an activity so that he’ll get on with his own without too much hand-holding from you. Is he ready to participate in group activities? Many preschool activities, like “circle time,” require that all the children in a class participate at the same time. These interactions give children a chance to play and learn together, but also require them to sit still, listen to stories, and sing songs. This can be very difficult for kids under 3 who are naturally active explorers and not always developmentally ready to play with other children.

If your child isn’t used to group activities, you can start introducing them yourself. Take him to story time at your local library, for instance, or sign him up for a class such as tumbling to help him get used to playing with other children. Is he used to keeping a regular schedule?

Preschools usually follow a predictable routine: circle time, play time, snack, playground, then lunch. There’s a good reason for this. Children tend to feel most comfortable and in control when the same things happen at the same time each day.

So if your child doesn’t keep to a schedule and each day is different from the last, it can help to standardize his days a bit before he starts preschool. Start by offering meals on a regular timetable. You could also plan to visit the park each afternoon or set — and stick to — a bedtime ritual (bath, then books, and bed).

Does he have the physical stamina for preschool?
Whether it’s a half-day or full-day program, preschool keeps kids busy. There are art projects to do, field trips to take, and playgrounds to explore. Does your child thrive on activities like this, or does he have trouble moving from one thing to the next without getting cranky?

Another thing to consider is how and when your child needs to nap. Preschools usually schedule nap time after lunch. If your little one can keep going until then or even all day like a wind-up toy, he’s set. If he still needs a mid-morning snooze, it might not be time yet to go to school.

You can work toward building his stamina by making sure he gets a good night’s sleep. If you have some flexibility in your schedule, you might also want to start him off in a half-day program to ease him into the hustle and bustle of preschool life, and gradually increase the length of his school day as he gets more comfortable.

If you find that your child seems eager to learn new things and explore, he isn’t getting enough stimulation at home or daycare, or he seems ready to broaden his social horizons and interact with other children, chances are it’s the perfect time to start school.