Leadership & Faculty Home / About Us / Leadership & Faculty Dedicated Leaders & Expert Teachers At our school, everyone works together to make sure students and families feel happy and supported. Our leaders, staff, and teachers are all here to help. Our teachers love sharing what they know, whether it’s about reading, music, or outer space! They make learning fun and exciting, helping students explore new things and find what they love. Together, we create a special place where students can grow and learn every day. From the Head of School Mellesia Nelson, M.S.W., M. Ed. Dear Future Sagemont Prep Families, Thank you for exploring Sagemont Preparatory School, where academic excellence, innovative thinking, and purposeful learning come together to inspire confident, curious, and empowered students. At Sagemont Prep, learning is dynamic, personalized, and caring. Our passionate educators design experiences that ignite intellectual curiosity, nurture creativity, and empower each student to explore and think critically. We do not just prepare students to succeed in school, we prepare them to lead in life. Rooted in our commitment to real-world application, students engage in immersive, hands-on learning that extends far beyond textbooks. Whether launching a business idea, exploring marine ecosystems, or engaging in Harkness Discussions around a shared table, our students take ownership of their learning and their growth. We believe education should be a collaborative journey. That is why we foster strong partnerships between home and school, ensuring every child feels seen, supported, and challenged. We invite you to schedule a personal tour and discover how Sagemont Prep cultivates confident learners, compassionate leaders, and active agents of change. We look forward to welcoming you into our vibrant community. Sincerely, Mellesia Nelson, M.S.W., M. Ed. Head of School Read More Browse By Role All Roles Faculty Leadership Search Nancy Mejias Engineering (Upper Campus) Nancy Mejias Engineering (Upper Campus) Mellesia Nelson, M.S.W., M. Ed Upper Campus Head of School Mellesia Nelson, M.S.W., M. Ed Upper Campus Head of School Email (954) 799-6121 Mellesia Nelson received her Bachelor’s degree in Psychology from Boston College. She went on to obtain a M.S.W. in Child and Family practice from The University of Illinois and a Masters in Educational Leadership from Florida Atlantic University. Ms. Nelson has been a valued member of the Sagemont Prep family since 2004. She began her career at Sagemont Prep as the Guidance Counselor, where she successfully implemented and facilitated drug prevention, self-esteem, and anti-bullying programs by building strong, lasting community partnerships. In 2010, Ms. Nelson accepted the position as College Counselor. While in that position, she increased college and university representation on the Sagemont Prep campus by over 550%. She also raised scholarship dollars awarded by over 100%, matching students with right fit colleges. Ms. Nelson’s journey at Sagemont Prep continued as the Assistant Principal and then Principal of the Upper Campus, where she worked collaboratively with students, facilitating their ability to reach their full potential and tap into their passions and talents. She provided students with the tools to explore, take risks, think critically, and create. Currently, as the Head of School, Ms. Nelson’s vision for the students at Sagemont Prep is that they own their education. She encourages students to put themselves in the driver’s seat of their future and set high standards for their educational growth. Reyna Oriol World Languages, Spanish (Upper Campus) Reyna Oriol World Languages, Spanish (Upper Campus) Greysi Ospina Upper Campus Teacher Greysi Ospina Upper Campus Teacher Marcy Prieto Art (Lower Campus) Marcy Prieto Art (Lower Campus) Lena Raza Math (Upper Campus) Lena Raza Math (Upper Campus) Heliana Rendon Spanish - Speakers ELL (Lower Campus) Heliana Rendon Spanish - Speakers ELL (Lower Campus) Rosemary Rijos Business Office Manager Rosemary Rijos Business Office Manager Email (954) 799-6121 Rosemary Rijos graduated from Caguas City College with a Computer Science degree. She was born and raised in New York and moved to Puerto Rico where she lived for 22 years. She moved to South Florida in 2001 and has been working at Sagemont Preparatory School for the last 19 years. Ms. Rijos has held multiple jobs throughout her 19 years including Technology Support, Administrative Assistant, and Business Office Assistant. Ms. Rijos adores Sagemont Prep and is consistently striving to support the Sagemont Prep Community. Natalia Rios Upper Campus Administrative Assistant Natalia Rios Upper Campus Administrative Assistant Email (954) 799-6121 Ms. Rios is a driven and detail-oriented professional with over 15 years of experience, most recently with 7 years as an office manager in an educational setting. She is compassionate and eager to make a positive impact in the lives of students and families at Sagemont Prep. David Roe Upper Campus Principal David Roe Upper Campus Principal Email (954) 799-6121 Mr. Roe has been an integral part of the Sagemont Prep family since 2008. He is a graduate of Florida State University, where he majored in economics. Before becoming Upper Campus Principal, Mr. Roe served as Upper Campus Assistant Principal and Department Chair for History, teaching all levels of Upper Campus history, including Advanced Placement United States History and Advanced Placement Micro and Macroeconomics. In addition to serving as the 12th-grade level sponsor, Mr. Roe developed a beloved staple of the senior curriculum: the Senior Market, an opportunity for students to explore entrepreneurship in a real-world setting. Mr. Roe is also well known on campus as “Coach Roe,” for leading the boys’ basketball program for over 10 years, most recently as Head Varsity Basketball Coach since 2017. He has helped the team achieve two State Championships, six Final Fours, and one National Tournament Invitational. Coach Roe has proudly helped over 35 athletes achieve college scholarships. Mr. Roe is most excited to help strengthen our Sagemont Prep community by organizing engaging events, building an alumni program, and assisting the Sagemont Prep Clubs and Honor Societies. Diana Rush Lower Campus Teacher Diana Rush Lower Campus Teacher Salome Saenz Math (Upper Campus) Salome Saenz Math (Upper Campus) Rosmary Teran Lower Campus Teacher Rosmary Teran Lower Campus Teacher Kenny Vega Facilities & Transportation Coordinator Kenny Vega Facilities & Transportation Coordinator Email (954) 953-5233 Monica Vigna, Ed. S. Lower Campus Principal Monica Vigna, Ed. S. Lower Campus Principal Email (954) 953-5233 Monica Vigna has been with Sagemont Preparatory for over 18 years. Her tenure at Sagemont Prep began in the classroom, but Monica also served as the Sagemont Prep Lower Campus Assistant Principal for seven years. Earlier in her career Monica taught kindergarten through fifth grade, as well as the dual language program at an International Baccalaureate school. She is certified in early childhood, elementary education and administration and supervision, and is ESOL endorsed. Monica earned Bachelor’s and Master’s degrees from Florida International University, as well as a specialist degree in Educational Leadership from Florida International University. She is very excited to be part of the Sagemont Prep family. She enjoys working hand in hand with students, faculty, parents, and the community and believes that each child has a special gift and will blossom with the collaboration between home and school. Liana Walker English (Upper Campus) Liana Walker English (Upper Campus) Page 4 of 5 Jump to Page Page 1 Page 2 Page 3 Page 4 Page 5 Learn More About Sagemont Teachers What role do teachers play beyond the classroom? Our faculty members serve as mentors, coaches, and advocates who are deeply invested in the whole child. Whether leading a championship athletic team, advising a club, or sponsoring student-led initiatives, our teachers build the foundational trust that allows students to take risks and grow. These informal interactions are where much of our character-building happens, fostering a connected community where every student feels championed. How long do teachers typically stay at Sagemont Prep? As Sagemont Prep approaches its 30th anniversary in the 2026-27 academic year, our faculty reflects a rare and intentional balance of institutional wisdom and modern innovation. We are home to many educators who have dedicated over 20 years to our community. This seasoned expertise is complemented by a dynamic group of educators at various career stages, creating a collaborative culture where veteran experience and fresh perspectives meet to benefit every student. What credentials do Sagemont Prep teachers hold? Sagemont Prep teachers hold impressive academic credentials, with a significant majority possessing advanced degrees and specialized certifications in their respective fields. Beyond their formal education, they bring meaningful, real-world experience into the classroom, ensuring that instruction is both intellectually rigorous and relevant to the complexities of the modern world. What makes the teachers at Sagemont Prep exceptional? What truly distinguishes our faculty is the intersection of purposeful rigor and personal connection. A Sagemont Prep teacher does not just deliver content; they curate an experience that challenges a student’s intellect while supporting their emotional well-being. They possess the unique ability to recognize a student’s untapped potential and provide the specific scaffolding needed to turn that potential into high-level achievement. What do families appreciate most about teachers at Sagemont Prep? Our families consistently point to the intentionality of our teaching staff as their most valued attribute. Parents value the delicate balance our educators strike: providing a warm, supportive safety net while maintaining the high academic standards that empower students to graduate with the confidence, resilience, and intellectual curiosity required for the next level.