Teens don't always use birth control correctly or consistently. WebMD tells you about the best birth control methods for teens as recommended.
Despite the superior effectiveness of LARC methods, only 4% of teens ages 15- 19 years are using them.
Birth Control (Especially for Teens), an ACOG patient education FAQ, covers the birth Which birth control methods are the best at preventing pregnancy?.
We know you've heard it before, but we'll say it again: the only 100% effective method of birth control is abstinence. If you're worried about $$, don't be. Teens.