As much as we know there are manners that kids should know, it's nice that this article I found in Yahoo! actually listed them out - somewhat like a checklist:
Helping your child master these simple rules of etiquette will get him noticed -- for all the right reasons.
By David Lowry, Ph.D.
Your child's rude 'tude isn't always intentional. Sometimes kids just don't realize it's impolite to interrupt, pick their nose, or loudly observe that the lady walking in front of them has a large behind. And in the hustle and bustle of daily life, busy moms and dads don't always have the time to focus on etiquette. But if you reinforce these 25 must-do manners, you'll raise a polite, kind, well-liked child.-
Manner #1
When asking for something, say "Please."
Manner #2
When receiving something, say "Thank you."
Related: Kid-Made Thank You Notes
Manner #3
Do not interrupt grown-ups who are speaking with each other unless there is an emergency. They will notice you and respond when they are finished talking.
Manner #4
If you do need to get somebody's attention right away, the phrase "excuse me" is the most polite way for you to enter the conversation.
Manner #5
When you have any doubt about doing something, ask permission first. It can save you from many hours of grief later.
Manner #6The world is not interested in what you dislike. Keep negative opinions to yourself, or between you and your friends, and out of earshot of adults.
Manner #7Do not comment on other people's physical characteristics unless, of course, it's to compliment them, which is always welcome.
Manner #8When people ask you how you are, tell them and then ask them how they are.
Manner #9
When you have spent time at your friend's house, remember to thank his or her parents for having you over and for the good time you had.
Manner #10Knock on closed doors -- and wait to see if there's a response -- before entering.
Manner #11When you make a phone call, introduce yourself first and then ask if you can speak with the person you are calling.
Manner #12Be appreciative and say "thank you" for any gift you receive. In the age of e-mail, a handwritten thank-you note can have a powerful effect.
Manner #13Never use foul language in front of adults. Grown-ups already know all those words, and they find them boring and unpleasant.
Manner #14
Don't call people mean names.
Manner #15Do not make fun of anyone for any reason. Teasing shows others you are weak, and ganging up on someone else is cruel.
Manner #16Even if a play or an assembly is boring, sit through it quietly and pretend that you are interested. The performers and presenters are doing their best.
Manner #17If you bump into somebody, immediately say "Excuse me."
Manner #18Cover your mouth when you cough or sneeze, and don't pick your nose in public.
Manner #19
As you walk through a door, look to see if you can hold it open for someone else.
Manner #20If you come across a parent, a teacher, or a neighbor working on something, ask if you can help. If they say "yes," do so -- you may learn something new.
Manner #21When an adult asks you for a favor, do it without grumbling and with a smile.
Manner #22When someone helps you, say "thank you." That person will likely want to help you again. This is especially true with teachers!
Manner #23Use eating utensils properly. If you are unsure how to do so, ask your parents to teach you or watch what adults do.
Manner #24
Keep a napkin on your lap; use it to wipe your mouth when necessary.
Manner #25
Don't reach for things at the table; ask to have them passed.
Originally published in the March 2011 issue of Parents magazine.
Source: http://shine.yahoo.com/channel/parenting/25-manners-every-kid-should-know-by-age-9-2480238/
