Students who self-registered last year should keep their credentials every year they use the Big Ideas Math program. Students should log in with their credentials at BigIdeasMath.com, click on their name in the top-right corner of the website, and then click Add Class. Students should enter the new class access code provided by their teacher. Registering for new classes in this manner will ensure the accessibility of students' data from previous years. If a student does not remember their previous credentials, their teacher can find that student's username in the Students section of Class Management.