If you want to become cool, don't change everything about you. Then you'll just be faking who you are, and then people won't know the real you- which turns into a disaster.
Have faith and confidence, be happy with who you are and be yourself.
Keep up with the latest trends, but that doesn't mean that you have to have everything that's in style. Also don't sport too many fads at once. It will make you look desperate and lack a unique style
Being cool often means being funny. Tell jokes that make people laugh.
If any teacher scolds or tells u always try to reply him to make everyone laugh but do no reply very loudly
Don't try to be a bully that will spoil your image in school.
Be who you really are DO NOT TRY SO HARD people notice.
Be friendly and be nice to people. Say hi to all the cute girls and be friendly with your teachers too.
How to Be Cool at School


Warnings
People can see when you're trying too hard; it will make you seem desperate and look like an obvious wannabe.
Make sure you check the dress code rules before you try dressing in style. If you don't you can be in serious trouble with the teacher/principal.
Avoid spreading rumors.
Rumors may seem like a good way to climb to the top, but it will throw you right back down along with the person who started it.
Don't make hurtful comments to others or bully. This makes others think of you badly and attracts other bad people toward you. Treat everyone as equal and be nice and friendly. Do not set others apart.
Wearing a rubber band around your wrist can cause permanent damage if it is too tight, so be sure that it is loose.
Necklaces can also be dangerous if pulled really hard.
Hair can also cause damage if it's fairly long and it gets stuck in clothing then pulls out.
Remember you don't want hair strands stuck to your bag.Very uncool.
How to Be Cool at School

Are you considered not cool in school? You might have already read up on how to be cool, but you might be wondering: How do I apply that in school?
Steps :
Remember, the first day of secondary school is the most crucial. If you are a total newcomer try to find out who has the same interests as you.
Do not try to identify who's where on the social ladder, people don't appreciate being labeled. Try to be friendly. Socialize with as many people as you can without getting them mixed up. Do not try to be friends with them only because they are "popular", nobody likes stereotypes. At the end of your first year in the school, try to have found some close friends to regularly spend time with. In middle school, your friendships might fade a little. Don't worry about it. Middle school is about change, and making new friends. There are a lot of new kids who have many things in common with you that are waiting for a new BFF.

Avoid becoming a bully and avoid becoming the victim of one. Don't be mean to other people in your school just to make yourself seem cooler. Also, don't let bullies push you around. It's easier said than done, but in school, using your sense of humor and good social tactics are key.
Remember as confusing as this next sentence will sound, think about it. Don't care about what you think other people think of you. Just go with the flow. If you know for sure someone is judging you you can voice it, then just act like you don't care...because you don't. Practice thinking this way and your confidence will improve via self-acceptance. People at school will start wondering where you got all this self esteem!
Have your own sense of style: Discover the clothes you prefer/like to wear and create your style. Wear those clothes to school and be unique.
Be independent:
You don't need a boyfriend/girlfriend to be cool. You definitely don't need a bf/gf in your life right now in school unless you think you can handle the stress that it brings.
Be open-minded: This is very vital. Some people have different opinions and tastes so don't go gossiping about them just because they don't agree with you.
Respect people: Respect others beliefs and cultures.
Note that this is just a little tip, if you're a girl, always wear a bit of jewelry. Maybe a black and red beaded necklace or if you're not that feminine, just one bracelet will do! Even wearing a rubber band on your wrist gives a cool impression, I've noticed. If your school has strict rules, maybe a slightly fancy watch would do. Nothing extreme. If your uniform is a polo shirt, like eg. A plain shirt with a collar: 1. do not do up all the buttons, you will look like a weird nerd. 2. If your school isn't too strict with its uniforms, wear a plain one color shirt (1 color only) under your uniform shirt, with the buttons open, so you can see the shirt.
Smile, don't be sarcastic, don't act like you WANT attention because you don't need it, and don't look like your trying too hard. Be patient. Keep doing your thing. Someone's bound to notice.
Have a nice hairstyle. No need to go all mohawk and stuff, maybe a spikes or gel if you're a boy, bangs if you're a girl.
Be fit, clean, and smell good.
The first two are compulsory. Brush your teeth, exercise, etc. The third, you don't have to smell nice, just don't smell at ALL. Deodorant and a bit of perfume over that is good. Not too much. Or just deodorant. Just don't smell bad. It will make your rating go way down.

Always remember that attitude is a key factor in how people look at you. Adjust your attitude accordingly.
Making funny jokes may be funny and cool.But it is not cool when you make jokes about your friend esp . "you're a fat , hairy , monkey!" or anything because it may hurt his feelings and that is not cool and don't make the joke over and over again because it may be boring already.
If you want to be cool does not mean you have to be naughty.Behave in class.Sometimes it's time for jokes sometimes it's not.Don't be to cocky or show off this will make your rating go down.
Don't make rumors because that may make people hate you too.