Each user account has profile information associated with it. Some of this information is required when you sign up for an account. This information is private and is used for a variety of purposes including creation of online applications. For example, the address information is used on the application if you are not a Teacher since normally an account is used to create a single application for a student. The Grade and School fields are used whenever an application is created.
Some profile information is required for specific roles such as Teachers and Judges. You will not see these if you have not been assigned one of these roles.
Profile information, including your account password and email address, are accessible via the User menu. This will present the login form if you have not logged in first.