Upper School Teacher

PRINCIPIA

Upper School Teacher responsible for teaching mathematics courses and fostering critical thinking in students at Principia School. Engaging with community and supporting character education initiatives in a supportive environment.

Posted 7/14/2026full-timeSt. Louis • Montana • 🇺🇸 United StatesMid-LevelSenior💰 $51,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in teaching mathematics from Pre-Algebra to advanced levels, integrating technology and STEM best practices to foster critical thinking and collaboration among Upper School students. Committed to ongoing professional development and effective collaboration with colleagues to enhance curricular and instructional goals.

Highest-signal resume keywords

Bachelor's Degree In MathematicsTeaching CertificationExperience Teaching Diverse PopulationsIntegration Of Technology In EducationCurriculum Development

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

Mathematics InstructionLesson PlanningGrading And AssessmentDifferentiated InstructionSTEM Best PracticesCritical ThinkingProblem-SolvingCollaborationResearch SkillsCommunication Skills

Soft Skills

Enthusiasm For MathematicsCommitment To Student SuccessCharacter EducationEffective CommunicationCollaboration With Colleagues

Tools & Technologies

1:1 Laptop EnvironmentEducational Technology

Certifications & Qualifications

Teaching Certification (Preferred Within Two Years Of Hire)

Industry Keywords

Upper School EducationProfessional DevelopmentCurricular GoalsInstructional GoalsCharacter Growth

About the role

Key responsibilities & impact

Teach various mathematics courses ranging from Pre-Algebra to typical upper-level classes with an understanding of each course’s place within the overall departmental scope and sequence
Collaborate as a member of the Math Department to support curricular and instructional goals, including weekly meetings
Model enthusiasm and love for mathematics and its applications
Plan lessons that invoke student interest and ownership, connect learning to real-life situations, and meet the needs of future-ready learners to make the content relevant and meaningful
Integrate technology effectively in a 1:1 laptop environment to enhance and redefine learning
Incorporate future-ready skills and STEM best practices to foster critical thinking, problem-solving, collaboration, research, and communication skills
Display a strong interest in and commitment to working with Upper School students (grades 9–12)
Differentiate process, product, and content to support a wide range of learners and help each student recognize their unlimited potential
Pursue ongoing professional development and apply best educational practices while contributing to a professional learning community
Handle discipline situations effectively in ways that support student character growth
Demonstrates a strong interest and commitment to working with a wide range of students, helping them feel successful and recognize their unlimited potential
Demonstrates commitment to preparing students to be thoughtful, informed, and active citizens
Recognizes character education as an essential and natural part of daily classroom and ensemble instruction
Collaborates effectively with colleagues, coaches, parents, houseparents, and administrators to support shared curricular, instructional, and student-life goals
Supports mutual curricular and instructional goals with Upper School colleagues through collaboration and regular communication
Participates as a member of a departmental team, including attending weekly meetings and collaborative planning
Supports innovative and engaging student recruitment and retention efforts
Pursues ongoing professional development, applies best educational practices, and contributes to a professional learning community focused on continuous improvement
Participates in required professional development on Monday and Wednesday afternoons
Fulfills all responsibilities expected of a faculty member, including curriculum development, lesson planning, grading and assessment, administrative tasks, meetings, supervision, family communication, and participation in school events as assigned
Lead and mentor small groups of students as a Crew Leader, including oversight during fall Character Trips and active participation in House activities
Attends and supports curricular trips, festivals, service-learning performance opportunities, and school activities, including chaperoning social events and travel
Performs other duties as assigned in support of the school’s mission and programmatic needs

Requirements

What you’ll need

Student of Christian Science preferred
Supportive of Principia’s guiding statements as articulated here: https://www.principia.edu/about/guiding-statements
Bachelor's degree in mathematics or a closely related field required, with sufficient coursework to teach high school math through advanced levels (including Statistics)
Master's degree in mathematics or master’s in education with a minimum of 18 graduate credit hours in mathematics preferred
Ability or experience teaching dual credit math courses preferred
Teaching certification preferred, and required within two years of hire
Experience teaching a diverse population of students and in varied school environments preferred.

Benefits

Comp & perks

Generous Employee Tuition Discount: Enjoy a 90% discount on tuition (pro-rated for part-time staff) for your eligible children enrolled from Pre-K3 through College (infant and acorn programs excluded).
Relocation: Principia provides a relocation reimbursement of up to 12% of your annual salary, when moving from outside a radius of more than 50 miles.
Professional Development: Access to learning opportunities, training programs, and career growth support.
Comprehensive Benefits: Learn more about all our benefits here, including comprehensive health, dental, and vision plans, paid time off, a 403(b) retirement plan with Principia matching, and more.