Describe how your strengths are expressed in your daily life.

Since educators are not personally acquainted with you, we cannot know what your actual personal strengths and weaknesses are, but we can talk about the sort of essay your teacher might be expecting you to write. 

There are two "real life" situations in which you might be expected to discuss these things, job or university admissions essays. Your aim in either of these situations is to cast yourself in a favorable light without appearing...

Since educators are not personally acquainted with you, we cannot know what your actual personal strengths and weaknesses are, but we can talk about the sort of essay your teacher might be expecting you to write. 

There are two "real life" situations in which you might be expected to discuss these things, job or university admissions essays. Your aim in either of these situations is to cast yourself in a favorable light without appearing arrogant or boastful. This means that rather than making generic statements ("I'm very smart" or "I work hard") you should provide specific examples of your strengths, such as prizes or awards.

For weaknesses, the best way to present them is as weaknesses overcome. For example, someone who is not a natural athlete might describe how she started running and lifting weights every day after school to achieve her dream of being on a school team. This tells of a weakness (not being very strong) that the student turns into a strength by working hard. Similarly, you could talk about how you struggled to succeed in a particular class such as math and how you got extra tutoring or spent time doing additional homework problems to improve your performance.