Sarah Donnelly

Sarah Donnelly (she/her/hers) is the Head Coach at Natick High School in Massachusetts, where she has been coaching since 1996. Sarah caught her passion for Speech & Debate in the 1980s as a competitor for the team she now coaches, and was then a member of the Fulton Debating Society as an undergraduate at Boston College. 

Over the years, Sarah has coached many students to late elimination rounds and even some championships at a variety of tournaments including Yale, Harvard, Columbia, NCFL, and NSDA. But she considers her greatest successes to be much quieter moments – the moments when she gets to help a student conquer a particular challenge or discover a new skill. 

Sarah believes that her experience in Speech & Debate made her the person that she is today, and that she owes it to the Community to pay that back. In pursuit of that goal, she has served in many leadership roles including Vice President and At Large Member of the Massachusetts Speech & Debate League, Diocesan Director of the Worcester Diocese of the NCFL, District Committee Member of the New England District Committee of the NSDA, and she currently serves as Chair of the New England District. Sarah is also the Event Coordinator for the NCFL, where she serves as a bridge between the NCFL Board of Directors and the local host committees. She is excited to be a part of the NCFL Inclusion Committee, along with other members of the ISD faculty, and hopes to help promote diversity, inclusion, equity, and justice in our tournament experiences.

Unlike many coaches, Sarah isn’t a classroom teacher. When she isn’t coaching, planning a tournament, or doing other Speech & Debate things, Sarah is an Event Coordinator in the non-profit sector. 

Sarah has worked at a variety of summer institutes throughout her career. She enjoys this experience as it allows her to work with students and faculty members from around the country in the pursuit of building our community. She is excited to join the ISD Faculty because she wholeheartedly believes in its model, and she looks forward to learning from its students and faculty.


Alexandra Sencer

Alexandra Sencer is the Director of Speech and Debate at Collegiate School in New York, New York. Over the past decade, Alexandra has coached dozens of students to late elimination rounds in Congressional Debate and other events at invitationals across the country, including Harvard, Blue Key, Yale, and the Glenbrooks as well as NCFL and NSDA Nationals. She credits her success to her perpetual commitment to helping students discover their authentic selves. In the arena of Congressional Debate, this translates into ensuring that a commitment to constituent advocacy bolsters each speaker’s technical proficiency.
Alexandra, herself,  is a fierce advocate for diversity, equity, and inclusion for all students. As a tab director at some of the nation’s largest tournaments, she has made instituting systemic changes in support of these values a priority. Before her time at Collegiate, Alexandra coached at Cary Academy, Lake Mary Prep, Lake Highland Prep, Boca Raton High, and Wellington High. Alexandra can’t wait to work with students at ISD: Florida and help them find their voice in this life-changing activity!

Sahaj Singh

Sahaj Singh is a senior at Carroll Senior High School in Texas, where he has served as the school’s congressional debate captain for three years. In his career, Sahaj championed the New York City Invitational and the Texas State Debate tournament. In addition, he has placed 2nd at the Yale Debate Invitational, 4th at the Harvard National Congress, 4th at the Blue Key Debate Tournament, 7th at the Glenbrooks Debate Tournament, and was a finalist at the Tournament of Champions. Most notably, Sahaj won the Overall Leadership Bowl at the Harvard National Congress and was the championship presiding officer at the NSDA National Senate. Over the last six years, he has been ranked as high as #1 in the nation by the NSDA and has amassed over 25 bids to the Tournament of Champions. Sahaj is very excited to join the ISD family and coach the next generation.

Fabiola Sepulveda

Fabiola Sepulveda is a senior at Cypress Bay High School in South Florida, where she is also the PF captain. Over the first three years of her competitive career, Fabiola has reached late elimination rounds at nationally competitive tournaments such as Blue Key, Sunvitational, Golden Desert, Bronx, and Berkeley. In addition, she qualified for the Tournament of Champions and NSDA National tournament her junior year. Outside of competitive success, Fabiola has made an impact in her community, where she not only mentors over a dozen teams at her school’s program but also middle schools within her school district. Fabiola has attended ISD twice as a camper and is beyond thrilled to return as an instructor!

Dori Schurr

Dori Schurr is a rising senior at Ransom Everglades School in Miami, Florida and a 3-time alumnus of ISD.  In fact, Dori learned how to compete in Public Forum at ISD 2017. She has competed in Public Forum for three years and is serving as the President of her team this year.  Dori and her partner have reached late elimination rounds at various national tournaments, including the Cypress Bay Tradition, Blue Key Invitational, NSDA, Sunvitational, and received speaker awards at both the Harvard Forensics tournament and Cypress Bay Tradition.  She has double-qualified to NSDA since her sophomore year, and won the district tournament in Public Forum as a junior.

In addition, Dori has been an active and integral member of Beyond Resolved ( since the end of her sophomore year, serving as the Southeast Regional Director for 2 years.  She has written a number of articles telling her story in debate and uses the platform to make change in our community. Dori is excited to come back to the ISD family for her fourth year!

Noah Rabinovitch

Noah Rabinovitch is currently studying at Northwestern University, but he recently graduated from Cypress Bay High School in Florida, where he was his team’s Speech and Debate co-captain. As a competitor, he competed in Original Oratory, Informative Speaking, and Duo interpretation. Noah is a two-time FFL State Champion, and has reached final rounds at the Florida Blue Key Invitational, the Nova Titan Invitational, Glenbrooks, the Sunvitational, GMU, the Tournament of Champions, and was a 2019 NSDA semifinalist in Original Oratory. Outside of speech, Noah is known by his peers for his fun personality, variety of haircuts, and Canadian dual citizenship. He had an amazing time experiencing the ISD difference last summer, and can’t wait to do it all again in 2020!

Jose Quinones

Jose Quinones is a two time ISD alumnus. He competed in Extemporaneous Speaking for all four years of his time at Cypress Bay High School where he is currently the Extemp Co-Captain. Despite this, Jose also managed to find success outside of his own event, reaching Top 8 at NSDA Nationals in Worlds Schools Debate and winning Oratory at the UK Season Opener. Throughout his extemp career Jose has reached numerous out rounds. In his junior year he reached finals at the New York City Invitational and Championed the Sunvitational in Florida. During his senior year he has reached final rounds at tournaments including the University of Kentucky Season Opener, Florida Blue Key, Patriot Games, The Sunvitational, Glenbrooks and most recently championed the Harvard Tournament and Florida State Tournament, as well as being invited to MBA. After experiencing it himself, Jose is so excited to share with others the ISD Difference this summer!

Jasper Ou

Jasper Ou is currently in his fifth year debating at Lake Highland Preparatory School in Orlando, Florida where he serves as Captain of Public Forum. Jasper has amassed 8 bids to the Tournament of Champions, and has also reached deep elimination rounds at various tournaments including: Championing the Blue Key Invitational and Berkeley Round Robin as well as reaching finals at the Berkeley Invitational, Glenbrooks Invitational, and Yale Invitational in addition to earning numerous speaker awards. As of 11/20/18, Jasper and his partner are ranked #1 in the nation. Jasper is very excited to work at ISD this summer and can’t wait to contribute to the #ISDDifference!

Ishan Maunder

​Ishan Maunder is a senior at Mission San Jose High School and serves as the captain of MSJ Debate. Next year he will be attending the University of Chicago. As a junior, he won NSDA Nationals with his partner Devesh and reached Quarterfinals at the TOC. Over his career thus far, he has amassed 19 bids and 4 auto-qualifications to the TOC. He has also won numerous tournaments including: Bronx, the Bronx RR Final, University of Pacific, Alta, Blake, the Blake Round Robin, ASU (2x), MLK, Stanford, and the Berkeley Round Robin. He has also reached deep elimination rounds at a long list of other invitationals. Ishan is very excited to join the ISD Family and can’t wait to work with you this summer!

Mo Marks

Mo Marks is a two time ISD Alumna. She competed in both extemporaneous speaking and impromptu speaking all four years of her time at Theodore Roosevelt High School in Des Moines, Iowa, where she is currently the captain of the speech and debate team. Mo has excelled locally, winning five state championships so far as well as qualifying to NSDAs three times so far. She has also had success on the national circuit with final round appearances at Yale, Florida Blue Key, Glenbrooks, Crestian, Patriot Games, Montgomery Bell Academy, Marshall, and Harvard. She quarterfinaled at ETOC twice in extemp, semifinaled once at UKTOC in extemp, and she finaled at ETOC in impromptu. In 2019, she won the NSDA national tournament in Impromptu! Mo also works to strengthen her community by coaching middle school PF and oratory as well as working with her novice team mates to increase their skills. Mo can’t wait to help more students from around the country experience the ISD difference this summer!