Applicants at the master's level must apply for admission to the diploma at the same time as for the MSc program or, at the latest, towards the end of their first term of enrollment in the master's. Applicants at the doctoral level must apply no later than the beginning of the second year of enrollment in their PhD program.

All applicants must provide the following:

A letter outlining their career plans and the relevance of the Diploma to those plans.
A plan of study, indicating the proposed schedule for completion of the requirements of both the diploma and their primary program.
A letter of support signed by their thesis supervisor and co-signed by the student's primary program director.

Applicants whose first language is other than English and who intend to take the diploma courses in English must provide one of the following:

A score of at least 250 (100 Internet-based) on the Test of English as a Foreign Language (TOEFL), with a score of at least 5 on the Test of Written English (TWE) and a score of at least 50 on the Test of Spoken English (TSE).
A score of at least 7 in at least three of the four International English Language Testing System (IELTS) tests (Reading, Listening, Writing, Speaking) and at least 6 in the fourth.
A score of at least 14 on the CANTEST, with no individual test score below 4.0, along with a score of 4.5 on the oral component of the test.
Proof of completion within the last five years, of a previous degree program in an English or French language university.
Proof of recent prolonged residence and exercise of a profession in an English or French speaking country (normally at least four years over the last six years).