Long-Term Substitute Middle School Math & Science Teacher

Montessori Academy of Colorado • Denver, CO

8d

About The Position

The Montessori Academy of Colorado (MAC) is seeking a dedicated, adaptable educator to serve as a long-term substitute Math and Science Teacher for middle school students in Grades 6–8. The assignment runs for approximately three months, from February to April. The role maintains continuity in student learning during the lead teacher’s absence and supports a smooth handoff when the lead teacher returns.

The substitute implements existing math and science lesson plans and curriculum, guides students through planned units, projects, and assessments, and differentiates instruction for adolescent learners with varied developmental and academic needs. The teacher maintains an orderly classroom, ensures materials and equipment are accessible, maintained, and safely stored, and follows established procedures for hands-on science work. The role also includes tracking attendance and academic progress, communicating with the lead teacher and Upper School Director, preparing handoff notes, attending weekly team meetings, and collaborating with Upper School colleagues.

MAC describes itself as a metropolitan school that engages each child through innovative academics, exploration of character, and a fearless, forward mindset. It is committed to a diverse and inclusive environment free of discrimination and harassment.

Requirements

• Strong content knowledge in middle school mathematics and science.
• Experience teaching middle school students.
• Ability to step into an existing classroom dynamic with professionalism and ease.
• Commitment to the full duration of the assignment.
• Bachelor’s degree in mathematics, a science field, education, or a related field.

Nice To Haves

• Valid teaching certification is preferred.
• Prior experience in a Montessori setting, or a strong willingness to follow Montessori guiding principles.

Responsibilities

• Implement math and science lesson plans aligned with the existing curriculum and the lead teacher’s scope and sequence.
• Guide students through the current units, projects, and assessments planned for the assignment period.
• Differentiate instruction to address the varied developmental and academic needs of adolescent learners.
• Maintain classroom order and aesthetic, and ensure math materials and science equipment are accessible, maintained, and safely stored.
• Follow established safety procedures during hands-on science work.
• Provide students with a consistent, nurturing presence during the lead teacher’s absence.
• Maintain accurate records of student attendance, work completion, and academic progress.
• Communicate student progress to the lead teacher and Upper School Director, and prepare clear handoff notes for the lead teacher’s return.
• Attend weekly team meetings and collaborate with Upper School colleagues.
• Perform additional duties assigned by Administration in support of the school’s mission and operational needs.

Benefits

• Potential for paid Montessori training.
• Paid holidays and seasonal breaks.
• Flexible paid time off for personal or sick time needs.
• Paid professional development.
• Health, dental, and vision insurance options.
• 403(b) retirement plan with employer match.
• HSA plan.
• Employer-paid life insurance.
• Additional voluntary life insurance, critical illness, and disability plans.
• RTD EcoPass.

What This Job Offers

• Job Type: Part-time
• Career Level: Entry Level