High School Math Teacher: Long-Term Substitute

Description About St. John’s Prep

St. John’s Prep is an inclusive, Catholic, Xaverian Brothers Sponsored School for young men in grades 6 through 12. Founded on the Xaverian values of compassion, humility, simplicity, trust, and zeal, we educate students to be, do and stand for good in the world. We enroll approximately 1,500 students from more than 90 communities in Massachusetts, New Hampshire, and Maine.

St. John’s is a faith-based community grounded in and fortified by three main cultural priorities: recognizing all people as created in the image and likeness of God, embracing a habit of excellence grounded in a growth mindset, and empowering individuals to be unique expressions of God’s love in the world. Strong candidates will embody the Catholic principles and Xaverian values that guide our institution to help foster a supportive and inclusive campus environment.

For further information on how faith animates St. John’s, please visit Statement on Xaverian and Catholic Identity.

St. John’s seeks a long‑term, high school substitute mathematics teacher (Calculus and Algebra 2/Trigonometry) to cover a family leave from February 27, 2026 to June 5, 2026. Mathematics faculty members in the High School n’s teach five sections and may be assigned an additional supervisory duty. Classes meet five times within a seven‑day rotating schedule.

We seek a teacher who promotes curiosity and inquiry among students, engages all learners, uses technology as a vehicle for learning gains, and works with students to connect content to the real world in the classroom setting.

All members of the faculty are expected to give witness to our mission n’s. In addition to classroom teaching responsibilities, we encourage all members of the faculty to be involved in the life of the school beyond the classroom through a wide range of co‑curricular, intramural and interscholastic programs. For more information about St. John’s Prep, including our academic, spiritual and student life programs, please visit (Use the "Apply for this Job" box below)..

• Candidates must possess a bachelor’s degree in mathematics.
• Previous teaching experience in high school or middle school is desirable.

• Standing/sitting for long periods of time.
• Must be capable of adapting to frequent changes in position throughout the workday.
• Hearing and speaking to exchange information in person or on the telephone.
• Use of hands and fingers for manipulation, and using computer keyboard, educational tools, and perform first aid and CPR.
• Specific vision abilities required include close vision and distance vision.

All members of the faculty are expected to give witness to the Xaverian and Catholic mission of St. John’s Preparatory School by acting as servant leaders capable of modeling and actively promoting Xaverian and Catholic values. In addition to classroom teaching responsibilities, we encourage all members of the faculty to be involved in the life of the school beyond the classroom through a wide range of co‑curricular, intramural, and interscholastic programs.

For additional information about St. John’s Prep, including our academic, spiritual, and student life programs, please visit .

St. John’s Prep is committed to building a diverse and inclusive campus community. We welcome applications from underrepresented groups. We seek applicants who demonstrate a commitment to multiculturalism and diversity that is manifested in classroom practice, student engagement, interpersonal communication, and curricular decisions. For more information about our academic, spiritual and student life programs, please visit .

Interested candidates are asked to apply via online found on the Employment page of stjohnsprep.org. Candidates will need to upload a cover letter, resumé, and academic transcripts if applying for a faculty role. Please, no phone calls.