Change of Undergraduate Major
Change of major for undergraduate students who are admitted to the University for a term that has not yet begun:
These students, whether registered for the upcoming term or not, should be referred to the Admissions Office to change the major they are admitted into. CASA advisors may also email both the Admissions Office and Registrar's Office with the change of major information. No Change of Major form is required.
Change of major for undergraduate students once the term has begun:
http://www.colostate.edu/Depts/Registrar/records.htm#majorchanges
Changes of major will be updated as they are received by the Registrar's Office until the end of the term; however, those received after the 12th class day of each semester will not activate a change in technology fee for that semester. Majors changed after the 12th class day of each semester will appear in ARIES for the upcoming term(s) and not in current term.