During the grade school/preteen years, your child's world started to expand outside of your house. They learned how to manage schoolwork and how to form friendships. Their time in school has also increased their skills in math and language, teaching them how to apply basic mathematical operations, use grammar rules, and create stories. 

As your child enters their teen years, their social development will continue expanding, with their friendships becoming more important than ever, eventually overtaking your relationship with them. Don't fret, though, because that won't last forever.

You also have puberty in store for these teen years, which can bring along body image issues, mood swings, and rapid physical changes. This is when your child's independence shines through, though, as they prepare for life after high school. 

To help you navigate the teenage years, we have compiled a list of milestones for ages 13-18. 

You can also take our free screener to help determine if your child could benefit from developmental therapy, and if so, what type! 

13-Year-Old Milestones

Your child has officially entered the teen years, and by this age, you'll notice some significant developments. For instance, your thirteen-year-old is starting to develop their own opinion of the world around them, although they may still use their friends and social media to form these opinions. 

Your teenager's body is also changing significantly as they start puberty, and they may begin to notice how their changing body differs from their friends. 

Here are other milestones your 13-year-old should be meeting:

• Beginning to separate from family and form their own identity
• Developing interest in romantic relationships
• Displaying mood swings
• Becoming more self-conscious about their appearance
• Developing stronger friendships and peer relationships
• Showing increased independence
• Developing digital literacy
• Beginning to develop personal values

14-Year-Old Milestones

At fourteen, your teenager will continue to develop a stronger sense of self and independence. You may notice they spend more time with their friends and less time with you, but that's completely normal. Additionally, they might start questioning authority and social norms. 

Their physical development continues during this stage as well, though the pace may vary from peer to peer. By now, most fourteen-year-olds have begun experiencing significant physical changes.

Here are other milestones your 14-year-old should be meeting:

• Developing a stronger sense of identity and self-worth
• Showing increased interest in romantic relationships and dating
• Questioning authority and social norms
• Experiencing continued physical development
• Beginning to think more abstractly and critically
• Showing increased empathy and understanding of others' perspectives
• Developing more complex friendships and peer relationships
• Taking on more responsibility and independence

15-Year-Old Milestones

By fifteen, your teenager will likely be in a more stable phase of adolescence compared to the previous couple of years. Their sense of self will be more developed, and they'll have a clearer understanding of their values and beliefs. However, they may still experience mood swings, especially when it comes to hormonal changes. 

Friendships are extremely important at this age, and your teenager may begin to form more meaningful relationships. They may also become more interested in hobbies and activities that align with their interests and values. 

Here are other milestones your 15-year-old should be meeting:

• Having a more defined sense of identity and self-esteem
• Developing more nuanced and meaningful friendships
• Showing increased interest in romantic relationships
• Developing stronger critical thinking and reasoning skills
• Showing increased responsibility and independence in decision-making
• Developing a more complex understanding of moral and ethical issues
• Beginning to consider their future and career possibilities
• Showing increased empathy and understanding of others' experiences

16-Year-Old Milestones

As your teenager reaches sixteen, many of them will be driving, working, or both. They're becoming more independent and focusing more on their future. At this age, your teenager may be thinking about college and their career path, if they haven't already. 

Socially, they're developing deeper connections with their peers and may be focusing on romantic relationships. They're also becoming more aware of social issues and may be interested in making a difference in their community. 

Here are other milestones your 16-year-old should be meeting:

• Having a strong sense of identity and personal values
• Showing increased independence in decision-making and responsibility
• Developing deeper, more meaningful friendships
• Showing increased interest in romantic relationships and dating
• Developing more sophisticated critical thinking and reasoning skills
• Showing increased awareness of social and political issues
• Beginning to plan for their future and career path
• Showing increased emotional maturity and regulation

17-Year-Old Milestones

By seventeen, your teenager is preparing for adulthood. They're likely thinking seriously about their future, including college applications, work, and career planning. At this stage, they should be developing more sophisticated decision-making and reasoning skills. 

Emotionally, they may experience less mood volatility than in earlier teen years, though emotions can still run high. They're also developing a more complex understanding of relationships and may be navigating romantic relationships with more maturity. 

Here are other milestones your 17-year-old should be meeting:

• Having a well-developed sense of identity and personal values
• Showing advanced critical thinking and reasoning skills
• Demonstrating emotional maturity and regulation
• Developing deeper and more meaningful relationships
• Showing increased independence in decision-making
• Developing a more nuanced understanding of social and political issues
• Beginning to make concrete plans for their future
• Showing increased responsibility and accountability for their actions

18-Year-Old Milestones

By eighteen, your child is now officially an adult. Whether they're heading to college, entering the workforce, or taking a gap year, they're moving into a new phase of life. At this stage, they should have developed a clearer sense of who they are and what they want out of life. 

While they're becoming more independent, they still benefit from your guidance and support. This is a critical time to help them transition into adulthood while maintaining a strong relationship with you. 

Here are other milestones your 18-year-old should be meeting:

• Having a well-defined sense of identity and personal values
• Demonstrating emotional maturity and self-regulation
• Making informed decisions about their future
• Developing meaningful relationships with others
• Showing responsibility and accountability for their actions
• Understanding their strengths and areas for growth
• Having a plan for their future (college, work, etc.)
• Showing independence while still benefiting from parental guidance