How do I set parental controls on my Netflix account?
You can control access to certain maturity levels of Netflix content from the Your Account page. Parental control settings must be changed from a computer, and will apply to all devices currently attached to your Netflix account.
Netflix parental controls consist of 4 maturity levels: Little Kids, Older Kids, Teens, and Adults.
You can also set parental controls on individual profiles by changing the parental control settings in the Your Account section of each profile. If you want to make a profile kid-friendly by default, click the checkbox "This is a profile for kids under 12" in the Manage Profiles section of your account.