Your Son at 10: Milestones

Reviewed by Renee A. Alli, MD on May 04, 2021

At age 10, your son is growing steadily. They're starting to solve problems logically and is likely to be more independent.

Your Son’s Body

Your son is likely to stand somewhere between 4 and 5 feet tall at this age. Their weight should be between 65 to 90 pounds. They could grow up to 4 inches a year, but about 2 inches is normal until they start puberty.

They’ll be getting stronger, with their balance, stamina, and coordination improving. Their ability to play team sports gets better. They should be able to use some tools, and their ability to do detailed activities like painting may be increasing.

They’ll have lot of energy and should be getting at least an hour of physical activity a day. Their diet should be high in fruit and vegetables and lower in fats, added sugar, and salt.

Time spent watching television or playing with electronic devices should be limited to 2 hours a day or less.

Some of your son’s permanent teeth, particularly the ones closer to the back, are still coming in at this age.

Your Son’s Brain

At age 10, your son’s brain continues to develop. Their schoolwork may be uneven at this point, and their interests may be changing rapidly. But their attention span is increasing, and judgement is improving. 

They are most likely skilled at reading and writing, and can speak clearly. They're developing abstract and critical-thinking skills, can follow detailed directions, make plans, and reason through problems.

They should be able to read and understand books that are more challenging and mathematical problems, including fractions, word problems, and multiplication and division involving long numbers.

Their curiosity is likely growing, and they might ask a lot of questions about the world around them. They may start to show more creativity in things like writing, designing, or performing arts. They might also start to develop hobbies or collect things.

By this age, they should understand how their behavior affects others. They also should recognize and consider other people’s opinions and views and have a sense of what’s right and wrong, fair or unfair. 

Your Son’s Relationships

At 10, your son likely is still closely attached to you. But they’ll start to build stronger ties with friends and classmates, and group identification and peer pressure are growing at this age.

Most of their friendships will be with other boys, but they may have more interest in girls. Friendships are largely based on common interests. Loyalties to teams, clubs, or other groups are strong. Things like sports and board games will become more common than fantasy play at this age.

As they become more skilled physically, they’re likely to become more competitive. Conflicts with siblings may happen more often.

With puberty around the corner, they may have more mood swings. They may be more sensitive or get discouraged easily, or become more self-conscious about their body.

They’ll still tend to see adults as authority figures, follow their rules, and accept the beliefs of your family. But they're likely to question authority, see older kids as role models and become more conscious of what others think of them.   


At your son’s annual medical checkup, your doctor should examine:

  • Their height and weight
  • Their vision and hearing
  • Their physical development and behavior
  • Their immunization records, making sure they are current on vaccinations

In addition, your doctor will ask some questions to assess your son’s risk of conditions that may develop later in life, such as tuberculosis, high blood cholesterol, and anemia. 

Show Sources



American Academy of Pediatrics.

Ohio Child Welfare Training Program: “Developmental Milestones Chart.”

Michigan State University Extension: “9- to 11-year-olds: Ages and stages of youth development.”

Tennessee Children’s Cabinet, Kid Central: “Development.”

Stanford Children’s Health: “The Growing Child: School-Age (6 to 12 Years).”

American Dental Association: “Eruption Charts.”

Oregon State University Extension: “Middle Childhood and Adolescent Development.”

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