Brian Brezosky
Physical Education Teacher, NRHS/FMS

A North Rockland graduate from the Class of 2020, Brian Brezosky earned a Bachelor of Science from SUNY Oswego and a Master of Arts in Teaching from Manhattanville University. His connection to the district continued after graduation when he returned in January 2025 as a substitute teacher, a role he held through June 2026 before joining the district as a full-time physical education teacher. This school year, Brian is especially excited to return to the district where he grew up and begin the next chapter of his career in the same community that helped shape his educational journey.

Amber Feniger
Business Teacher, NRHS

A North Rockland graduate from the Class of 2016, Amber Feniger is returning to the district to begin a new career in education. After earning both a Bachelor of Science and a Master of Science in Accounting from Siena College, now Siena University, she spent more than five years working in public accounting, with experience in tax, client accounting services and audit. Now, Ms. Feniger is bringing that real-world experience into the classroom as a teacher of accounting and sports marketing at North Rockland High School. She is looking forward to connecting with students, sharing what she’s learned throughout her career and helping students discover their own passion for business.

Cassidy Fleury
Special Education Teacher, NRHS

A lifelong Rockland County resident, Cassidy Fleury is excited to return to the community she has called home, this time as an educator. After graduating from Tappan Zee High School, Ms. Fleury earned her Bachelor of Arts from Mount Saint Mary College and Master of Arts in Teaching in Special Education from Grand Canyon University. Before joining North Rockland, she worked as a special education teacher in the Marlboro Central School District. She is looking forward to getting to know her students, colleagues and families and becoming part of the North Rockland community. She hopes to create a classroom where students feel comfortable asking questions, taking risks and celebrating their progress along the way.

Kieran Keenan
Special Education Teacher, NRHS

Kieran Keenan holds a Bachelor of Science from St. Thomas Aquinas College and a Master of Science in Teaching from the same institution. Before stepping into this role as a special education teacher, Mr. Keenan gained classroom experience as a substitute teacher with the North Rockland Central School District. This school year, he is looking forward to helping his students grow academically while also developing character, becoming well-rounded individuals and serving as positive examples for others.

Zachary Kronenberg
Special Education Teacher, NRHS

Zachary Kronenberg brings experience teaching both special education and science to his new role at North Rockland High School. Mr. Kronenberg earned a Bachelor of Science and Master of Science in Teaching from St. Thomas Aquinas College. Before joining North Rockland, he taught special education and biology at Ramapo High School, along with Earth Science at the Charter School of Educational Excellence and Biology at Clarkstown South High School. As he begins his new role at NRHS, he is excited to make a positive impact on his students and help prepare the next generation of college-ready young adults.

Madison Mavrogiannis
Special Education Teacher, NRHS

Madison Mavrogiannis holds a Bachelor of Arts and a Master of Science in Teaching from St. Thomas Aquinas College. Before joining the North Rockland team, Ms. Mavrogiannis worked as a special education teacher in the Clarkstown Central School District. She is now continuing her work in special education as a member of the North Rockland High School, bringing their classroom experience and commitment to supporting students into their new role.

Richard Paltridge
Business Teacher, NRHS

A former Division I baseball player, Richard Paltridge spent two years playing at Penn State before transferring to Siena University, where he played for four years. Mr. Paltridge earned a Bachelor of Science in Business with concentrations in Sports Marketing and Accounting Theory, along with an education certification from Siena University. He completed his student teaching experience at Lansingburgh High School in Troy, New York.

Now joining the NRHS team, he is excited to become part of the North Rockland community and looks forward to inspiring, motivating and educating students while building meaningful relationships with them.

Concepcion Pena
Special Education Teacher, NRHS

Concepcion Pena holds a Bachelor of Arts in English and Secondary Education from the College of Mount Saint Vincent and a Master of Science in Education in Special Education, Grades 7-12 and Literacy, Grades 5-12, from Mount Saint Mary College. Before joining North Rockland, Ms. Pena spent 13 years teaching English in the New York City Department of Education, including nine years at Bronx River High School teaching eleventh grade English and a twelfth grade theater elective, one year at August Martin High School teaching eleventh grade English and three years at the High School for Energy and Technology teaching English to students in grades 9-11.

Ms. Pena said, “... it feels especially meaningful to now teach in the community where I live and that I have truly come to love and call home. Although I wasn’t born and raised here, North Rockland has become such an important part of my life that it often feels like I’ve always belonged here.” She looks forward to building relationships with students and creating a classroom where they feel comfortable being themselves, taking risks and discovering that they have something worth saying.

Emma Schlagler
Science Teacher, NRHS

Emma Schlagler holds a Bachelor of Arts and a Master of Arts in Teaching from SUNY New Paltz. Ms. Schlagler completed her student teaching experience with the Valley Central School District before beginning her career in education as a chemistry teacher at North Rockland High School.

New to the Rockland community, she is excited to begin her career in a district that places a strong emphasis on supporting students. She is especially looking forward to bringing chemistry to life through hands-on labs. As she puts it, “The looks on their faces when they see chemistry come to life and everything starts to make sense are priceless!”

Gili Sharett Malkiel
Music Teacher, FMS/NRHS

With an extensive background as a musician and educator, Dr. Gili Sharett Malkiel brings years of experience performing and teaching to North Rockland High School. Gili earned a Bachelor of Arts from the Buchmann-Mehta School of Music, along with a Master of Music and Doctor of Musical Arts from Stony Brook University and a Master of Arts in Teaching from Lehman College. Gili’s teaching experience includes orchestra and band programs in the Pleasantville Union Free School District and Chappaqua Central School District, the Hackley School Music Institute, Queens College and Juilliard’s Pre-College and Music Advancement Program and Young Audiences New York.

As a professional musician,  Dr. Gili Sharett Malkie has performed with artists including Yo-Yo Ma, Andrea Bocelli and Jon Batiste, appeared in more than twelve Broadway productions and performed with organizations including the New Jersey Symphony, American Ballet Theatre and New York City Ballet. This year, she is excited to bring her experience to North Rockland while helping students grow as musicians, discover the joy of making music together and develop the creativity, teamwork and confidence that come with arts education.

Fiorella Torres
Mathematics Teacher, NRHS

Fiorella Torres earned a Bachelor of Science in Mathematics with a concentration in Secondary Education from St. Thomas Aquinas College. Her experience in the classroom includes student teaching in the North Rockland Central School District and serving as a leave replacement at Suffern High School. Now, Ms. Torres is excited to return to North Rockland and create memorable moments with her students. She hopes to build a safe and welcoming classroom where students feel comfortable being themselves, asking questions and learning from their mistakes. Most of all, she wants every student to recognize their potential and feel confident pursuing their goals.