School is not easy, but if you work hard you will be able to get good grades. Just because something is hard in the beginning doesn't mean it is impossible. Even if you aren't naturally good at some subjects and you may never be the best, you still can be your best.
Do, however, please keep in mind that school isn't everything there is in life. One bad grade doesn't mean you have failed as a person because you are so much more than numbers on a page. That said, let's get into the tips!

Essentials

1. All of your books
This is pretty obvious but there actually are people in my class that forget to bring their books with them.

2. A pencil case
Your pencil case should contain:

  • Pens (blue/black ones and a red one)
  • Pencil
  • Sharpener
  • Eraser
  • Scissors
  • Glue
  • Tape
  • Usb-stick
  • Ruler

3. Notebooks
I cannot stress enough how important it is to take at least one notebook. I personally use one per subject but that depends on what you prefer. Notebooks are really useful to take notes and you can use them to make your assignments as well.

4. Water
It is really important to stay hydrated. Your brain doesn't work as well when you're dehydrated and drinking water also has a lot of benefits for your health.

5. A book
Whenever you have some time left in class and you don't have any assignments or studying you can do it's really useful to have a book with you. Teachers are usually okay with you reading when you're done and they will like it a lot more than you being on your phone. Also, if you're not on your phone the teacher can't take it from you.

6. A calculator
This is pretty self explanatory, but you need a calculator when you need to calculate something.

7. Random stuff
Some other things I always take with me:

  • Hand cream
  • Hand sanitizer
  • Hair ties
  • A hairbrush
  • Mirror
  • Band aids
  • Aspirin
  • Pads/tampons
  • Tissues

At school

1. Sit at the front
This isn't always possible but when it is, sit at the front of your class. Sitting at the front makes it easier to pay attention to what the teacher is saying andto read what is written on the board. Teachers also tend to have a better impression of students who sit at the front, which may be useful later in the year.

2. Take notes
Note taking helps you focus on the information, as well as giving you the possibility to go over your class again when you get home.

3. Try to get work done
Whenever you get time to work on assignments or when you have a free period, don't start talking to your classmates and actually get some work done. When you consistently do this it saves you a lot of time at home.

At home

1. Do your homework
Homework sucks, but try to start working on it as soon as possible. That way you will always be done in time and you will have time left to relax without feeling guilty.

2. Plan your homework
It is very important to know what you are going to do and when you are going to do it. That will nevery be surprised by an assignment and you may even manage to hand in some things early. I recommend using a diary to write down all your homework/tests as well as a planner in which you sort out when exactly you are going to do everything.

3. Go over your notes
The first thing I do when I get home is copying down my notes very neatly in a different notebook. This way, I go over the theories discussed in class, but I also have a summary when I have to study for a test.

4. Don't spend all your time studying
School can take up a lot of our time, but it is very important to take some time to yourself. Watch a movie, take a walk or do whateveryou desire to do. Our brains actually function better when they get some time off every now and then so this will actually help your grades as well.

5. Do practise exams
Studies have shown that the top students of their class don't just study the textbook and go over their notes. Before a test, they are taking practise exams. You can find those practise exams all over the internet and they are a great way to prepare yourself for a test and you will know what to expect.

Staying motivated

1. Set small goals
Maybe your parents tell you to study, but that isn't the right motivation. When you study for yourself, because you want to studying is way more effective. Just set a small goal for yourself to reach to keep yourself motivated.

2. Study to understand
A mistake many people make is learning the whole textbook by heart. This may help you get a good grade, but in the long run it will get you nowhere. When you actually understand what is happening you will remember it and understand it forever which will help you in the future as well as on your test.