Continue writing the next sentence in this paragraph:

How to become a certified land surveyor
Earn good grades in high school.
If you know as early as your high school years that surveying is the profession you wish to enter, you should work hard to earn good grades. You will likely need a college degree, so doing well in school will help you gain access to the college or university of your choice.
You should begin to focus on math and science courses, as these will be most directly related to your future work. A strong background in reading, writing and analysis will also be helpful.