Faculty and Staff

About Headmaster: Dr. R. Mark Sullivan

Mark Sullivan served as President of The College of Saint Rose from 1996 to 2012. Saint Rose is a comprehensive liberal arts/career preparation college serving 5,000 undergraduate and graduate students in the heart of Albany, New York. He holds a doctorate in Education from Harvard University, a master’s in Public Administration from Syracuse University, and a bachelor’s degree in Political Science from the University of Rhode Island. Prior to his presidency at Saint Rose, he served as Executive Vice President at Marist College, Vice President for Finance and Administration as Southern Connecticut State University and Assistant Commissioner for High Education in Connecticut. In 1980, he served as Interim Commissioner for Higher Education in Connecticut.

During his presidency at Saint Rose, the college invested over $100 million in new facilities; raised $44 million in donations; doubled enrollment; and increased the size of the college’s endowment seven-fold.

A strong advocate of community service and partnering with its host city, Sullivan chaired a number of local boards and mayoral commissions to enhance the economic health of New York’s capital city and the quality of its schools.

After stepping down as president, Dr. Sullivan created the Institute for Higher Education Leadership at The College of Saint Rose which provides education and training for the next cadre of leaders in higher education across the country and around the world. His teaching and research focuses on policy development, strategic planning, leadership and ethics in higher education, government and businesses.

Dr. Sullivan has been honored by many organizations in the Capital Region. Among those honors are the Envoy Salute by the Albany Chamber of Commerce, the University at Albany Citizen Laureate and the Business Review Executive of the Year.

Mark lives with his wife, Kathy, a medical technologist who has worked in the clinical setting at a number of hospitals She also taught chemistry at a community college in New Jersey.

Mark and Kathy have three children: Jay, a corporate lawyer in Boston; Kate, an educational consultant in Chicago; and Anna, a marketing director in a British law firm with an office in New York City. They are also grandparents to 4 grandsons (ages 8-14) and one granddaughter (age 5).

Email: Headmaster@saintgregorysschool.org



About: Mrs. Kelly Barr is our Pre-K teacher and comes to Saint Gregory’s with over 15 years experience and taught preschool, first and third grades at independent schools in Virginia, Texas, North and South Carolina. Her specialty area is working with emerging readers. Kelly has an undergraduate degree in Art History from the University of Mary Washington and a masters in Early Childhood Education from Virginia Commonwealth University.

Email: kbarr@saintgregorysschool.org

About: Mrs. Marilyn Brown is the Saint Gregory’s Music teacher. Marilyn has over 15 years experience and taught in both public and private schools in the Albany area.

Email: mbrown@saintgregorysschool.org

About: Mr. Mike Buono is the Upper School Social Studies/Religion teacher. He has over 15 years experience and recently taught middle school history at an American School in Taiwan.

Email: mbuono@saintgregorysschool.org

About: Mrs. Beth Clark has been a teacher in the lower school for the past 20 years. She started at Saint Gregory's as the Pre-K assistant, and now teaches in the Nursery School classroom alongside Mrs Marohn. Mrs. Clark considers it a privilege to be a part of each student's introduction to the community at St. Gregory's, and genuinely enjoys nurturing each child throughout their early childhood educational experiences, and maintaining those relationships as the students grow.


Mrs. Clark is one of 9 children, born and raised in Albany, NY. When she isn't teaching, she spends a great deal of her free time with her parents and extended family. She also enjoys reading, yoga, baking and being a new grandmother! A mother of 3, Mrs. Clark's youngest son is also a graduate of St. Gregory's.

"One of the most rewarding aspects of teaching at St Gregory's has been the sense of community. It is a joy to not only get to know the students but also their families, and watch our students develop from toddlers into young adults."

Email: eclark@saintgregorysschool.org

About:Mrs. Deb Connell began her career at SGS teaching first grade for seven years. While raising her children, she held various part-time positions in the Lower School that included language arts, art, enrichment, and remediation. She is currently the third grade teacher. Mrs. Connell has an undergraduate degree from Boston College and a masters degree in developmental reading from SUNY Albany. Her personal interests include sports, cooking, gardening, and reading. "SGS continues to be a place where I am encouraged to challenge my students academically, acknowledge and foster their unique abilities, and instill in them an appreciation for learning."

Email: dconnell@saintgregorysschool.org

About: Mr. Zane DeJoseph is the science teacher for grades 5-8.

zdejoseph@saintgregorysschool.org

About: Mrs. Kristen Dinkels recently joined Saint Gregory’s School as our Lower School Science teacher. Mrs. Dinkels has been teaching in all boys’ independent schools since 2002, having worked in Manhattan and Greenwich, Connecticut.

Her classroom experiences range from grades 1-3 with additional time spent teaching in preschool special education classrooms. Mrs. Dinkels also has extensive mentoring experience with recent college graduates just embarking on their own teaching careers. She also loves to guide and direct those interested in the education profession.

Email: kdinkels@saintgregorysschool.org

About: Mrs. Lynn Dollard has been our 1st grade teacher since 1999 and has 15 years of elementary teaching experience. She believes strongly in the transformative power of teaching and learning for both the student and the teacher.

Email: ldollard@saintgregorysschool.org

About: Mrs. Prajaakta Gore is the Business Manager.

Email: business.mgr@saintgregorysschool.org

About: Mrs. Katie Helm is the Upper School English teacher for grades 5-6 and works with Lower School faculty and students in areas of math and language arts.

Email: khelm@saintgregorysschool.org

About: About: Mrs. Sara Knaggs is the computer science and STEM teacher for grades K-8.

Email: sknaggs@saintgregorysschool.org

About:Mrs. Labatt-Simon teaches fifth through seventh grade math. She has worked professionally for 20 years in IT and marketing, and 7 years teaching fifth through twelfth grade math. She loves to prepare her students for the rigors of high school by engaging them in real life application of what they have learned. Students will learn trig by calculating the best path through the Gulf Stream, they will learn percent by calculating running distances using the 10% rule, and they will conduct surveys and create graphs using marketing methodologies. Mrs. Labatt has two children and enjoys triathlon, sailing, skiing, piano, and anything outdoors.

Email: klabatt-simon@saintgregorysschool.org

About: Mrs. Ellen Marohn is the Nursery program lead teacher.

Email: emarohn@saintgregorysschool.org

About: Mrs. Karen Mastromarchi is the Spanish teacher for grades N-8

Email: kmastromarchi@saintgregorysschool.org

About: Mrs. Mary Murphy is the 4th grade teacher.

Email: mmurphy@saintgregorysschool.org

About: Ms. Barbara Miller is the Front Office manager.

Email: bmiller@saintgregorysschool.org

About: Mrs. YungHee Risler is the Kindergarten teacher.

Email: yrisler@saintgregorysschool.org

About: Mr. Jake Shepard is the Assistant Headmaster, Upper School English teacher grades 7-8, and Latin teacher grades 7-8.

Email: jakeshepard@saintgregorysschool.org

About: Mr. Steve Seymour is the Physical Education teacher, boys basketball coach, and Athletic Director.

Email: sseymour@saintgregorysschool.org

About: Mrs. Joan Shepard is the Art teacher.

Email: jshepard@saintgregorysschool.org

About: Mrs. Stephanie Streck is the 2nd grade teacher.

Email: sstreck@saintgregorysschool.org

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