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Pasadena, CA 91106

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© 2019 by The Caltech Y


The Caltech Y is an independent 501c3 organization recognized by and formally affiliated with the California Institute of Technology. Founded by students in 1916, the Caltech Y seeks to broaden students’ worldviews, raise social, ethical, and cultural awareness through teamwork, community engagement, activism, and leadership.








For more than 100 years, the Caltech Y has enriched the lives of Caltech students through a wide variety of programs and services that are initiated and led by students.  We supplement and complement the excellent academics of Caltech by providing a variety of co-curricular events and activities for all campus members. Our programs fall within our 5 pillars: Leadership, Service, Adventure, Civic Engagement, and Perspective.

The Caltech Y's mission is to enrich student life and challenge students to grow into responsible citizens of the world. 

civic engagement

Eleven students of Throop College of Technology petitioned and ultimately received a charter for a YMCA club on campus. This would later be called the Caltech Y.


The Y was primarily a service organization. During WWI, it provided refreshments and other services for the soldiers training on campus and at the Santa Anita Racetrack.


Sunny Cui

Sunny ('20) is from Vancouver, Canada. She is studying Electrical Engineering and is a member of the Lloyd house. Although her favorite Caltech Y program is the Explore LA series, she has led many other Y programs, including the first Tech Policy trip to the Bay Area. 

vice president
of internal affairs

Evan Yeh

Evan ('20) is a junior in Avery House studying electrical engineering.  Evan got involved with the Y when an upperclassman introduced him to MAD (Make-A-Difference) Day and he has been going to ExComm meetings ever since. As ExComm Vice President of Internal Affairs, he'd like to  bring more awareness and engagement to the Y newsletters.

vice president
of operations

Hazel Dilmore

Hazel ('20) is a biology major focusing on microbiology and immunology. Her interests in public health, education, and social activism brought her to the Y, where she has participated in and led a variety of events including RISE tutoring and a Los Angeles River cleanup. 

vice president
of external affairs

Laura Hu

Laura ('21) is a sophomore in Ruddock House studying computer science. When she attended ExComm meetings, she got excited about the Y‘s many activities and began participating in Y programs. As ExComm Vice President of External Affairs, she wants to interact with the other student bodies on campus and increase awareness of what the Y has to offer.

board chair

Peter Hung  


Peter (BS ’08 and PhD ’16) is a Caltech alum, majored in Physics and Applied Physics and was a member of Page House. He is currently working at The Aerospace Corporation. Peter was an ExComm member for several years while he was a student, as well as the Director of Southern California State Science Olympiad for 8 years.


Donna Shepherd


Donna is the current President of the Assistance Leage of Flintridge, she joined the organization in 2010 and since then she held different positions. On her free time, she enjoys reading and gardening.

vice chair

Fred Clayton 

Fred holds a B.S. degree in Business Administration from USC. Currently, he is Chairman of Berkhemer Clayton, Inc.
He has served as a board member in several non-profits within those the National Investor Relations Institute - Los Angeles Chapter, The Paralysis Project of America, and in INROADS – Southern California.


Donald Collins


Don (PhD ’69) is a Caltech alum and holds his PhD in Aeronautics.  Following his retirement from JPL, he has reconnected with GALCIT and Caltech in many ways and is interested in the wellbeing of the Caltech students.

Executive director

Athena Castro 


Athena began working at Caltech in 1994, where she has filled a number of roles. She began her current position as Executive Director of the Caltech Y in 2000. She earned a BA in English Literature at Scripps College, an MS in Education and PhD in Higher Education from Azusa Pacific University. 

PROGRAM director

Greg Fletcher 


Prior to coming to the Caltech Y, Greg worked in Residence Life at UCLA and Cal Poly Pomona, and in Student Life on board the SS Universe Explorer for Semester At Sea. Greg is a native of Niagara Falls, Canada, and holds a Masters of Education with an emphasis in Student Affairs from Azusa Pacific University. 

of marketing & development

Agnes Tong 


Agnes joined Caltech in 2006 and worked closely with graduate students as the Chemistry Graduate Program Administrator for 8 years prior to joining the Caltech Y in 2016.  She holds a Bachelor’s degree in Biology from Binghamton University and an MBA from the University of Redlands.  She is a passionate advocate for our students and student programs. 

associate director
of student programs

Liz Jackman 


Liz joined the Caltech Y in 2010 while obtaining her Master's degree in College Counseling and Student Development from Azusa Pacific University. She worked as a teacher for four years in Japan prior to joining the Y. She is very committed to finding ways to partner with and better serve the community of Pasadena.