A safe place for kids to explore and play hundreds of educational games. PBS KIDS Games and Shows are research based and vetted by educators.
http://pbskids.org/

Features different people, animals, and places each month with facts, games, activities, and related links.
http://kids.nationalgeographic.com/

Has doctor-approved articles, animations, games, and resources to help kids learn more about their bodies and stay healthy.
http://kidshealth.org/

Why Wonder? Info and advice on sex, love and relationships, pregnancy, birth control and condoms, STDs and more. Published by Answer at Rutgers University.
http://www.sexetc.org/

Teenmag is the online home of teen magazine.
http://www.teenmag.com/

CosmoGirl - The Ultimate Teen Site for Games, Beauty, Fashion, Horoscopes, Quizzes and More!
http://www.cosmogirl.com/

Meet new friends, play games, write a blog and make a profile. Read celeb gossip, sports news, and game reviews. Get help with school projects.
http://www.kidzworld.com/

Teenagers seeking love. Teenagers in love. Teenagers dating. Dates for teens. Teenage love triangle. Teen love. Too young to date? All you need to know for safe and effective dating. A teens and parents guide to teenage dates and relationships.
http://www.teenagersguidetodating.com/