Yale :
Is the TOEFL or IELTS required for all international applicants?
No, the TOEFL or IELTS exam is required for applicants, regardless of citizenship, whose degree-granting undergraduate and graduate institutions were not taught in English. Applicants who have a degree from an English-speaking institution do not need to take the TOEFL or IELTS exam and do not require a waiver of the exam.
Kellogg:
TOEFL
* I am exempt from the TOEFL exam because I completed an undergraduate degree from an institution where English was the only language of instruction.
For undergraduate institutions not in the USA, please indicate where language of instruction can be verified
(e.g. list website address or provide source or documentation.).
The Kellogg School of Management does not grant TOEFL waivers. If you are not exempt from the TOEFL exam for the reasons stated above, please report your score on each section of the exam. (NOTE: TOEFL scores are valid for up to 2 years from the application deadline to which you are applying. If you have taken the test more than once, please include your highest total for each testing format that applies. If you have not yet taken your TOEFL exam, please enter the scheduled test date.)