Instructor Assistant Jobs in Rancho Cucamonga, CA

We are currently hiring for the 2026-2027 school year, starting September 2026.

About Mathnasium:

At Mathnasium, we are passionate about helping students from kindergarten through middle school unlock their potential, build confidence, and excel in math. We provide a fun, supportive learning environment where students develop strong mathematical thinking skills and achieve academic success through the Mathnasium Method.

Position Overview:

We are seeking enthusiastic, motivated, and dependable Math Instructors to join our team. As a Math Instructor, you will work directly with students in a collaborative learning environment, providing individualized instruction using the Mathnasium Method. Through comprehensive paid training, you will help students build confidence, strengthen conceptual understanding, develop procedural fluency, and improve their problem-solving skills.

Our instructors play an important role in creating a positive learning experience by encouraging student growth, celebrating achievements, and fostering a love of learning. Working alongside fellow instructors and Center Leadership, you will help ensure every student receives high-quality instruction and support.

Key Responsibilities:

• Deliver individualized math instruction using the Mathnasium Method
  
• Support students from kindergarten through middle school with varying skill levels and learning needs
• Guide students through personalized learning plans while encouraging confidence, independence, and a growth mindset
• Help students develop conceptual understanding, procedural fluency, and effective problem-solving strategies
• Monitor student progress and communicate observations with Center Leadership and fellow instructors
• Create a positive, engaging, and encouraging learning environment
• Build positive relationships with students and families by providing excellent customer service
• Maintain consistent instructional standards and support student behavior expectations
• Collaborate with instructors and Center Leadership to ensure student success and a positive center experience
• Assist with student assessments, learning activities, and other center responsibilities as needed
  

Qualifications:

Required Qualifications

• Within one year of earning your high school diploma
  
• Strong arithmetic and Algebra I skills (candidates must demonstrate math proficiency through a Math Literacy Test)
• Excellent work ethic, reliability, and willingness to learn
• Passion for helping students succeed and build confidence in math
• Strong communication and interpersonal skills
• Ability to adapt instruction to meet individual student needs
• Available to work at least 3 weekdays (4 preferred)
• Able to commit to a minimum of six months
  

Preferred

• Previous experience tutoring, teaching, coaching, or working with children
  
• Ability to teach through Geometry (Algebra II is a plus)
• Pursuing a degree in education, mathematics, science, engineering, or a related field
• Strong classroom or small-group management skills
• Organized, dependable, and detail-oriented
• Leadership, mentoring, or coaching experience
• Bilingual proficiency in Mandarin or Spanish is a plus, but not required
  

Schedule:

Qualified applicants should be available to work at least three weekdays (four preferred), with instructors typically working 1220 hours per week.

Fall Center Hours

MondayThursday: 3:15 PM6:45 PM

Friday: 2:00 PM6:45 PM

Saturday: 10:00 AM1:30 PM

Please note: Team members are expected to arrive before instructional hours begin to assist with center opening and preparation, and remain after the last instructional session to support student dismissal, center closing, and other end-of-day responsibilities. Scheduled shifts may begin before and end after the posted instructional hours.

This is an in-person, part-time position located in Glendora, CA. We strive to schedule instructors for as many shifts as their availability allows.

Why Join Us?

• Receive comprehensive paid training and certification in the Mathnasium Method
  
• Flexible scheduling that works well with school and other commitments
• Performance-based bonuses
• Gain valuable teaching, communication, and leadership experience
• Work in a fun, supportive, and collaborative team environment
• Make a meaningful difference by helping students build confidence and succeed in math
• Opportunities for advancement into Lead Instructor, Assistant Center Director, and future leadership roles

Ideal Candidate

• Passionate about education and helping students grow
  
• Positive, energetic, and patient
• Reliable, punctual, and professional
• Comfortable working in a fast-paced, team-oriented environment
• Eager to learn, accept feedback, and continuously improve
• Able to build rapport with students, families, and fellow team members

If you're passionate about math, enjoy working with students, and are looking for an opportunity to make a meaningful impact, we'd love to hear from you!
Mathnasium is an Equal Opportunity Employer and a drug-free workplace.

Please check your email regularly after applying, as our team will follow up with next steps. Be sure to check your Spam or Promotions folder, as our emails may occasionally be filtered there.