Holy Trinity Diocesan High School

98 Cherry Lane, Hicksville, NY 11801

(516) 433-2900

Holy Trinity High School is a community of faith, hope and love where we seek to educate the whole student: in mind, heart, soul, and in body. Our outstanding faculty and Campus Ministry educates and motivates students in the pursuit of truth and academic excellence, preparing each for future educational opportunities and to serve the Church and the world. Our diverse student population brings unique talents and perspectives, helping each student become the best version of themselves. Holy Trinity is a place where you will live and learn in the company of others who will raise your standards, remind you of your essential purpose, and challenge you to become your best self.

Founded in 1966 by the Diocese of Rockville Centre, Holy Trinity High School celebrates 50 years of academic achievement and rich spiritual development in a uniquely Catholic setting.  At Holy Trinity, each student is recognized for their unique skills, interests and abilities and their academic programs are developed to meet his or her specific academic needs. Holy Trinity offers an excellent and challenging college preparatory curriculum, which includes Regents, Honors, Advanced Placement courses and college credit courses through St. John’s University, Molloy College and LIU Post.

Dynamic co-curricular courses like computer graphics and industrial design complement our nationally recognized Music and Performing Arts programs where students participate in theater, dance, music, band and stagecraft. In addition to a challenging academic curriculum, Trinity offers a wide selection of extra-curricular activities and athletics to suit everyone’s interests. Over 70% of our students participate in our athletic programs. Our clubs and activities include Science Olympiad, Math Leagues, various Art clubs, Foreign language clubs, Volunteer Club, Stage Crew, Music Ministry, Jazz Band, Select Choir, Yearbook, Student newspaper and more. Trinity students do more and become more than they ever imagined.

We celebrate our faith as a family and give you great opportunities to participate in the school’s apostolic mission. The success of our students is guided by Trinity’s four fully accredited, full-time Guidance Counselors who are there to assist in academic, college and career decisions. You’ll find yourself, but you won’t have to do it alone.

Trinity students succeed!  100% of the Class of 2016 was accepted to colleges and universities and were offered over 34 million in scholarships. All graduates earned a NYS Regents Diploma, with more than 50% of graduates receiving a Regents Diploma with an Advanced Designation. Holy Trinity is accredited by the Board of Regents of the University of the State of New York and the Middle States Association of Colleges and Schools.

Holy Trinity Diocesan High School is how high school should be. 

Make your choice. - Change your world.


NOTE: Academic scholarships are offered to the top performers on the CHSEE exam.



  • Ms. Kathleen Moran


  • Diocesan Priests, Dominican Sisters of Sparkhill, Sisters of Mercy and Sisters, Servants of the Immaculate Heart of Mary


  • 1,070 Young Men and Women

2016-2017 TUITION:

  • $9,950


  • $300

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