What will I learn?

The Master of Environmental Science (MESc) and Master of Forest Science (MFS) programs are designed for students wishing to conduct scientific research that contributes toward basic and applied knowledge. The MFS degree is intended for those students wishing to work on forest-related topics, and the MESc degree is intended for students wishing to work on non-forest related environmental issues. These science degrees are intended to provide students a deeper disciplinary focus than the School's management degrees, while holding to the core value of the School that students should be allowed flexibility in course selection in order to meet their educational goals. The course of study includes formalized training in the philosophy and practice of science. Training is provided through key courses in combination with extended research. The scientific research required for this degree will be conducted in close collaboration with a F&ES faculty member; therefore, students must have a commitment from a faculty research advisor upon admission to these degree programs.

The MESc/MFS is a 48-credit program, with formal coursework comprising at least 24 credits. Decisions on the timing for completion of the coursework credits are made by the student and research advisor. Courses may be distributed evenly over two years, or a greater course load may be carried in Year 1 to accommodate research-related travel and fieldwork in Year 2.

MESc/MFS students are required to complete Mixed Methods for Social Science Research (F&ES 551a) or Natural Science Research Methods (F&ES 550a) in their first semester. Another research methods course may be substituted for F&ES 551a or F&ES 550a when appropriate and subject to approval of the research advisor. The Master's Thesis should be a coherent piece of scholarship in the form of one or more major papers suitable for publication in a peer-reviewed journal or as a chapter in an edited book. A Master's Thesis typically includes original data or an original analysis of published data and leads to novel interpretations and new findings. The thesis should draw from research that begins and is carefully planned in Year 1. The research should be sustained through the summer and serve as a focus of student effort in Year 2.

Which department am I in?

Yale School of Forestry and Environmental Studies

Study options

Full Time (2 years)

Tuition fees
US$42,300.00 per year
Please note this fee is for academic year 2018-19 and are subject to change for the coming year.
Start date

28 August 2019, 13 January 2020


Yale University



06520, United States

Entry requirements

For international students

Students must have completed a Bachelor's degree (or equivalent) prior to matriculation at Yale.

English Language requirements: The minimum score on the TOEFL is 610 on the paper-based test or 102 on the Internet-based test.

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