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Departments & Programs




  • Prior Degrees. All applicants must hold a BA or BS degree from an accredited US college or university or its equivalent from an international institution of recognized standing, as listed on the Graduate Admissions site. A prior Masters degree is not required for PhD applicants.

  • Test Scores.  PhD applicants are required to submit GRE verbal, quantitative, and analytical writing scores from a test taken within five years. No subject-based test is required. E-IPER does not have a minimum GRE requirement. 

  • English Language Skills.  Applicants whose first language is not English must submit Test of English as a Foreign Language (TOEFL) scores from an examination taken within 18 months of applying. A score of at least 600 on the paper-based, 250 on the computer-based, or 100 on the internet-based TOEFL is expected in order to begin graduate studies. Applicants with a BA or BS or 2-year masters degree from an accredited, English-speaking university may request an exemption from the TOEFL requirement from the Stanford Graduate Admissions office.


Regardless of their citizenship or financial circumstances, all admitted E-IPER PhD students are guaranteed up to 12 quarters of funding, compiled from a variety of sources including teaching assistantships, research assistantships, gifts, and endowed funds. However, PhD applicants are encouraged to investigate outside funding opportunities, such as the National Science Foundation Graduate Research Fellowships, EPA Science to Achieve Results (STAR) Fellowships, the Department of Energy (as federal agencies, these opportunities are limited to US citizens and permanent residents), and other opportunities for which they might be eligible. An extensive list of fellowship opportunities can be found under Financial Resources.

Fee Waiver Eligibility

E-IPER values global diversity and particularly encourages prospective international students from low and middle income countries to apply to its PhD program. Recognizing that Stanford's $125 graduate application fee may deter some candidates with limited financial means, E-IPER offers a limited number of fee waivers for international students who face a financial hardship that would prevent them from applying. Information about the fee waiver for international applicants is available on the PhD Application page.

(Note - There is also a University-wide fee waiver application process for select US Citizens/Permanent Residents.)