Demo

Middle School Math Teacher

The Principia
St. Louis, MO Full Time
POSTED ON 4/5/2026
AVAILABLE BEFORE 6/4/2026

Title: Middle School Math Teacher

Department/Location: Middle School Faculty, St. Louis

Position Type: Full-Time, 39 week


Summary

The Middle School Math Teacher facilitates engaging mathematics lessons for sixth, seventh and eighth graders using a variety of teaching methods to meet student needs, mentors students as their teacher and character educator, and collaborates with faculty and parents meaningfully. Full-time, school-year position.


Who We Are 

At our award-winning Early Childhood through grade 12 Principia School in St. Louis, Missouri, and top-ranked Principia College in Elsah, Illinois, Principia faculty and staff make up a close-knit community of educators, coaches, and professionals taking a distinct approach to education—blending academic excellence with Christian Science-based character education. Principia’s team of over 500 employees supports not only Principia School and Principia College, but also a worldwide network of alumni and friends.  


At Principia School, our core value is LOVE. Love and its attributes underpin our foundational beliefs as well as our educational approach. We focus on developing the whole child—intellectually, physically, mentally, socially, and spiritually, preparing students for the next steps in life. We foster a challenging yet supportive environment where character unfolds naturally, and talent is cultivated through boundless opportunities. Character education plays an essential role in every aspect of the student experience, and classroom work is augmented by character trips, leadership development, and real-world, hands-on, project-based learning. 


Principia employees are part of an engaging academic community preparing students to be tomorrow’s leaders, thinkers, and changemakers. We strive to create a collaborative and inclusive environment where everyone feels they belong and are valued.

 

Primary Responsibilities

  • Teaches 6th, 7th, and 8th grade classes, including daily lesson planning, regular pretesting, and backwards design of units (utilizes the Understanding by Design curriculum framework)
  • Differentiates for multiple levels within each class
  • Communicates with the Learning Engagement Center about student needs and push-in/pull-out services
  • Serves as a resource for Lower School teachers in their curriculum design and instruction
  • Helps organize the administration of standardized testing and analyzes the data for trends; makes decisions about instruction and specific student intervention in response to the data
  • Assesses student understanding and skill level using rubrics and a proficiency scales
  • Follows the curriculum with pacing and student engagement in mind, as well as supplements the eighth grade curriculum with Algebra 1 Common Core standards
  • Meets and communicates with students and parents regarding student growth
  • Participates in weekly faculty meetings 
  • Assesses students in their approaches to learning
  • Creates and edits unit plans for each unit of study
  • Participates in yearly goal-setting and frequent one-on-one meetings with supervisor
  • Reflects on teaching and learning regularly and improves practice
  • Completes the required portfolio, including walkthroughs, school visits, reflections, and goal-setting
  • Attends conferences (could include Math in Focus, National Council of Teachers of Mathematics)
  • Participates in and contributes to weekly and yearly professional development sessions
  • Communicates timely and effectively with students, parents, and administration
  • Engages in professional learning experiences that support school initiatives
  • Actively collaborates with colleagues across levels and departments to support the implementation of school-wide initiatives
  • Participates in various committee meetings, faculty and parent meetings, and professional development
  • Supports Middle School activities by chaperoning social events and trips

Core Competencies 

Principia values the unique strengths each employee brings to their role. The following competencies are especially important for success at Principia: 

  • Continuous Learning & Expertise: Demonstrates mastery in your area of responsibility and seeks opportunities for professional growth and development. 
  • Accountability & Results Orientation: Manages time and priorities effectively, meets commitments, and consistently delivers high-quality outcomes. 
  • Problem Solving & Judgment: Approaches challenges thoughtfully, considers multiple perspectives, and makes sound, timely decisions that support institutional goals. 
  • Proactivity & Ownership: Takes initiative, anticipates needs, and drives projects forward with minimal supervision while taking responsibility for outcomes. 
  • Excellence & Attention to Detail: Produces accurate, polished, and high-quality work; continuously looks for ways to improve systems, processes, and results. 
  • Service Orientation: Builds positive, supportive relationships and responds promptly and professionally to the needs of students, colleagues, and other stakeholders. 
  • Collaboration & Collegiality: Works cooperatively across departments and teams; values input from others and contributes to a positive, respectful environment. 
  • Communication: Shares information clearly and concisely; listens carefully to others and adjusts communication style for different audiences and situations. 
  • Inclusion & Belonging: Demonstrates respect for all people; values diverse perspectives and fosters a culture of inclusion, belonging, and mutual respect. 

Minimum Qualifications

  • Student of Christian Science preferred.
  • Bachelor’s degree required in Math or related field, Master’s degree preferred.
  • Teaching certification preferred (required within two years of hire date).
  • Relevant teaching experience with middle school students.
  • Supportive of Principia’s guiding statements as articulated here https://www.principia.edu/about/guiding-statements

The statements above describe the general nature and level of work but are not a complete list of responsibilities and are subject to change at the discretion of Principia. 


Compensation and Benefits

We offer a competitive salary range for this position, starting at $51,000 annually for candidates with a Bachelor’s degree and no prior teaching experience. Salary is commensurate with degree and years of teaching experience. 


In addition to salary, our comprehensive total rewards package includes: 

  • 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. 

Equal Opportunity

Principia, a mission-driven institution, believes every person has the right to an equitable and respectful educational environment and workplace. Principia does not discriminate on the basis of race, color, national origin, ethnicity, gender (identity or expression), sexual orientation, family status, disability, age, or military or veteran status. 

In hiring, admissions, and related decisions, Principia—as an institution with a religious mission—gives preference, where appropriate, to Christian Scientists. 


Salary.com Estimation for Middle School Math Teacher in St. Louis, MO
$51,095 to $76,363
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