How to Apply

The Diocese of Rockville Centre is closing McGann-Mercy High School in June of 2018.   We will not be accepting new applications.

Application Process

It is not too early to start the application process for Junior High and High School for the 2018-2019 school year. Come see to our Open House on Saturday, October 21st, between 9 am and 12 pm.

To start the application process, go to  Please direct any questions to Catherine Drew at McGann-Mercy High School, 1225 Ostrander Avenue, Riverhead, NY  11901.  

For additional information, or to begin the admissions process, call Catherine Drew at 631.727.5900, ext. 335 or email her at

All documents listed below will need to be submitted along with online application:

  1. Most recent report card/transcript
  2. Attendance Record
  3. Behavioral Record
  4. IEP and/or 504 Accommodation Plan (if applicable).  Final acceptance into the school and proper placement will be made pending a review of these documents.
  5. Standardized test results

Once your child has been accepted, the registration/enrollment process will begin.  You will receive notification to the begin the registration process.  Additional required forms will need to be submitted at the time of registration:

  1. Registration forms - completed online via TADS
  2. Request for transportation
  3. Request for Pupil Records form
  4. Physical form
  5. Immunization/Health form
  6. $395 Registration fee.  This is the 2017-2018 registration fee.  All fees are non-refundable and include the cost of the following:  registration, lock, study planner, Science lab safety goggles, Bible, Religious Studies course book, day retreats, all non-elective Art, Computer, Science Lab and Music fees (except instrument rental), Guidance fee including all standardized testing (i.e. NEDT, Terra Nova exams), and ID photos.

Additional Application Information

Catholic High School Entrance Exam (CHSEE)

The usual means of application to any Catholic high school in the Diocese of Rockville Centre includes taking the Catholic High School Entrance Exam.  This test is administered at all Catholic high schools in the fall of each school year.  Details for this test are available from McGann-Mercy, various parochial schools, parishes or directly from the Catholic High School Administrators Office at 516.739.5030. 


Special Requirements by Grade

Freshman Year

In order to be considered for admission, the student must successfully complete the eighth grade and must present the adequate academic credentials, including the results of the CHSEE.  Candidates for admission to the freshman year are notified of their status by mail at the end of January.

Junior High, Sophomore and Junior Years (and any freshman who did not take CHSEE)

For admission for freshmen after the Catholic High School Entrance Exam has been given or for anyone in grades 7,8,10 and 11, the following must be provided:

  1. A copy of the student's last final report card as well as the latest report card issued during the current school year
  2. Attendance record
  3. Behavioral record
  4. Application form completed online (see below)
  5. A possible interview with the Admissions Office

*** Please note:  McGann-Mercy rarely accepts students into the 11th grade after the 1st quarter and we do not accept students for transfer into the 12th grade unless moving into the area.


Frequently Asked Questions (FAQ's)


Q:  What is McGann-Mercy looking for in a prospective student?

A:   We truly believe in the well-rounded student.  We seek to enroll students who are prepared to be successful academically and contribute to the McGann-Mercy community as a whole.  Each student is encouraged to be involved in all aspects of the school.


Q:  How can I receive a brochure/application for McGann-Mercy?

A:   For your convenience, you may contact the Catherine Drew in the Admissions Office at 631.727.5900, ext. 335, or email her at

Q:  What is the tuition for McGann-Mercy?  Are there additional fees?

A:   For the complete description of tuition and additional fees by grade, see Tuition/Fees.   The fees listed are for the 2017-2018 school year only.


Q:  Does McGann-Mercy offer scholarships or financial aid?

A:  Financial aid opportunities are available for students applying to grades 7-12.  To apply for financial assistance, please visit


Q:  What is a typical class size?

A:  Classes at McGann-Mercy range from 15-30;  however, a typical class has about 24 students.


Q:  If my child is placed in a waiting pool, and no opening becomes available, do we have to reapply for the following year?

A:  Yes


Q:  Are siblings of current McGann-Mercy students and children of McGann-Mercy alumni automatically offered admission?

A:  While the school gives priority consideration to siblings and legacies, each applicant is required to follow the same admission process and is evaluated in the same manner by the Admission Committee as all applicants.


Q:  I am not sure if our family can afford McGann-Mercy or if my family will qualify for financial aid.  Is it worth applying?

A:  McGann-Mercy is committed to helping families afford a McGann-Mercy education, which is why we offer a range of financial aid and scholarship opportunities.  Many families find our payment plans a convenient way to manage the costs of a McGann-Mercy education.  From McGann-Mercy's perspective, if you're uncertain if you will qualify for aid, but feel that paying McGann-Mercy's tuition and additional fees will be a financial hardship, we encourage you to apply for aid.  The process is confidential and has no impact on the admission decision. 


Q:  Does McGann-Mercy provide transportation?

A: No, however free bus transportation for eligible students is offered by the following school districts, with central pick-up and drop-off points from the following school districts.  However, please check with your district as some districts may have certain conditions:

  • Center Moriches
  • East Moriches
  • Eastport-South Manor
  • East Quogue
  • Greenport
  • Hampton Bays
  • Longwood
  • Mattituck/Cutchogue
  • Middle Country
  • Miller Place (only if you reside in Rocky Point School District)
  • Montauk
  • Mt. Sinai
  • Remsemburg/Speonk
  • Riverhead
  • Rocky Point
  • Sachem
  • Shelter Island
  • Shoreham-Wading River
  • South Country
  • Southold
  • Southampton
  • Tuckahoe
  • Westhampton
  • William Floyd

This service is NOT rendered by McGann-Mercy.  Please contact your resident school district for details.

Please note - Transportation Request forms are due to your district by April 1st.

Q:  What kind of test must my child take to be considered for admission?

A.  The usual means of application to any Catholic high school in the Diocese of Rockville Centre includes taking the Catholic High School Entrance Exam.  The test is administered at all Catholic High School in the fall.  You can receive information about this exam by contacting McGann-Mercy, various parochial schools and local parishes, or by calling the Catholic High School Administrator's Office at 516.739.5030.


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