Key checklist for this stage
- In Korea, fourth graders have a school health checkup; check vision every year.
- See a doctor if early signs of puberty appear, such as breast development before 8 in girls or testicular enlargement before 9 in boys.
- When giving a first smartphone, agree together on rules for time, place and app installs.
- Keep to 9–12 hours of sleep and an average of at least 60 minutes of active play a day.
- Get a flu shot every year.
Study habits and self-management
As schoolwork grows and abstract ideas appear, the habit of planning and finishing on their own becomes important. Doing homework and review at the same time every day, and writing tasks down and crossing them off, helps.
Focusing on 'what you didn't know and how you figured it out' rather than scores keeps children from hiding mistakes. Decide on extra classes by looking at your child's interest, energy and free time together.
If reading is a struggle, the same mistakes keep repeating, or homework takes far too long, it may be worth checking for vision or hearing problems or learning and attention difficulties.
Friendships and bullying
Peer groups form, and acceptance by friends strongly affects self-esteem. When your child is upset about exclusion or conflict, listen to the end before offering solutions, and work out together what they want to do.
If you suspect bullying (physical, verbal, exclusion or online), write down dates and details and talk with the teacher. In Korea, the 117 school violence hotline and the 1388 youth counseling line also offer help.
The start of puberty
Puberty usually begins between ages 8 and 13 in girls and 9 and 14 in boys. The first sign is often breast budding in girls and testicular enlargement in boys, followed by pubic hair and a growth spurt. Stronger body odor is also a common change.
If these changes begin before 8 in girls or before 9 in boys, it's a good idea to have a pediatrician (pediatric endocrinologist) check for precocious puberty. Whether it's diagnosed and treated is decided by examination and tests.
Explaining body changes in advance, using correct names, makes children less anxious. It's also a good time to start hygiene habits like daily showers, fresh underwear and deodorant.
Smartphones and online safety
- At first, agree that devices are used only in shared spaces and not taken to bed.
- Use parental controls to manage age ratings, app installs and purchases.
- Agree never to share photos, address or school with people met online, and to tell a parent right away if someone asks to meet.
- Explain that insults and exclusion in group chats can also be bullying.
- Parents can model putting screens down at meals and before bed.
Sleep, activity and physical health
9–12 hours of sleep a day is still recommended at this age. Sleep is easily squeezed by classes, homework and screens, so set bedtime first and fit the rest of the schedule around it.
WHO recommends an average of at least 60 minutes a day of activity that gets them breathing hard, and less sitting and recreational screen time. Time outdoors is also known to help slow nearsightedness, so pair it with regular eye exams.
In Korea, fourth graders have a school health checkup. Permanent teeth keep coming in, so keep up regular dental visits and ask about molar sealants.
Vaccines & checkups in this stage
Korea's Childhood Vaccine Schedule → Infant and Child Health Checkups →
FAQ
My third-grade daughter has a breast bud. Is it precocious puberty?
Breast development in girls usually begins between ages 8 and 13. If it started before 8, height suddenly shoots up, or changes progress quickly, have a pediatrician examine her. Precocious puberty is determined by examination and tests.
At what age should a child get a smartphone?
There's no set age. Decide based on whether your child can follow rules and really needs to be reachable. When you do, agree on rules for time, place and apps, and turn on parental controls.
I think my child is being excluded by friends.
First, listen to the whole story and tell your child it isn't their fault. Record what happened and when, and talk with the teacher. In Korea, the 117 school violence reporting and counseling center can also help.
How many hours should elementary schoolers sleep?
9–12 hours a day is recommended for ages 6–12. Trouble getting up in the morning, daytime sleepiness or more irritability can be signs of too little sleep.
Sources
- Korean Pediatric Society
- Korean Society of Pediatric Endocrinology
- AAP HealthyChildren.org
- WHO guidelines on physical activity and sedentary behaviour
- American Academy of Sleep Medicine (AASM) sleep duration recommendations
- Ministry of Education school violence prevention (Korea)
Medical information is for reference only. This is general information and does not replace diagnosis or treatment. Always talk to your child's doctor. In an emergency in Korea, call 119.
Related
A big transition from kindergarten to school. Managing on their own and getting used to the school rhythm matter more than letters and numbers.
Age 11–12Ages 11–12 (upper elementary)Children enter the heart of puberty, with fast changes in body and mind. They want independence but still need their parents' support.
Media and screen timeThe younger the child, the more they need human interaction, active play and sleep rather than screens. Instead of banning screens perfectly, aim for age-appropriate limits and family rules so media is used well and in moderation.
Discipline and emotion coachingThe goal of discipline is to help children build the ability to manage their own behavior. With clear, consistent limits on a foundation of warmth, children learn without being hit or frightened.
Developmental checks and delaysEvery child develops at their own pace, but when you are worried about a delay, checking is better than waiting. Finding out early and helping early does the most for your child.
Teeth and Oral CareBrushing starts the day the first tooth appears. A rice-grain smear of fluoride toothpaste, no bottle in bed, and a first dental visit around the first birthday are the basics of cavity prevention.