Classroom Assistant (Science Lab) - MHS

Marquette High School; Chesterfield (MO); On-site; USD 28,000 - 29,000; Full time

Job summary

Marquette High School in Chesterfield, Missouri, is seeking a Classroom Assistant (Science Lab) to support science instruction and lab preparation. The role is a school-term position with 6 hours per day, Monday through Friday, from 8:00 am to 2:30 pm, starting Aug 24, 2026.

Starting wage is $17.94 per hour, $18.69 per hour with MO teacher certification. Preference given to science teaching certificates; transfer opportunities exist for current support staff.

Qualifications

• Science teaching certificate preferred; substitute certification required.
• Minimum of sixty (60) semester hours from an accredited college/university or Missouri substitute certificate
• Friendly, helpful attitude in working with students and staff
• Positive, caring manner with children

Responsibilities

• Prepare labs for high school chemistry classrooms
• Accept direction from classroom teacher
• Assist with additional responsibilities and assignments as needed by the teacher or principal
• Assist in the development of learning packets and instructional aids
• Assist teacher with demonstrations, copying materials and checking progress in class
• Assist with field trips and supervision during lunch/recess

Skills

Staff communication

Student supervision

Lab assistance

Office & Google apps

Safety supervision

Teamwork

Education

60 college hours or MO substitute cert

Tools

MS Office

Google Apps

Lab equipment handling

Job description

Classroom Assistant (Science Lab) - MHS

Rockwood R-6 School District Marquette High School - Chesterfield, Missouri Open in Google Maps

Job Details

Job ID: 5866579

Application Deadline: Posted until filled

Posted: Aug 03, 2026 5:00 AM (UTC)

Starting Date: Aug 24, 2026

Job Description

Science teaching certificate preferred; substitute certification required.

$17.94 per hour

$18.69 per hour if MO teacher certified

30 hours per week, 6 hours per day.

Schedule: 8:00 am - 2:30 pm

Start date:August 24, 2026

Anycurrent support staff employee eligible to transfer must submita TRANSFER application to this posting before the internal closing date to be considered.

POSITION TITLE:

Classroom Assistant

STATUS:

School Term Position, 6 hours per day

FLSA STATUS:

Exempt

x

Non-Exempt

REPORTS TO:

Building Principal

HUMAN RESOURCES:

x

Approved

Not Approved

POSITION SUMMARY:

Assists with duties assigned by the classroom teacher to enhance the learning of all students.

ESSENTIAL FUNCTIONS:

• Prepare labs for high school chemistry classrooms
• Accept direction from classroom teacher
• Assist at times with additional responsibilities and assignments as needed by the teacher or principal
• Assist in the development of learning packets and other instructional aids
• Assist teacher with carrying out his/her responsibilities by setting up demonstrations, copying instructional materials and checking progress in class assignments
• Assist the teacher in specific routine activities such as drills, reinforcement, grading objective tests and papers, developing verbal and listening communication skills, and demonstrating helping, guiding, and interest-building exercises
• Assist the teacher in the overall supervision, control, and management of the classroom
• Assist with field trips
• Help collect resources for use in the classroom
• Review teacher’s lesson plans and understands the classroom assistant’s role in assisting the teacher implement the lesson plans
• Under direction of administration will supervise students during lunch and recess time as assigned
• Under direction of the classroom teacher, learns techniques for implementing curriculum
• Under the direction of the teacher, assists with independent, tutorial, and small study groups
• Work directly with teachers to carry out specific tasks related to student’s needs

ESSENTIAL SKILLS AND ABILITIES:

• Ability to interact effectively with staff and parents
• Ability to move within building, classrooms, and playgrounds
• Ability to relate and communicate to students regardless of their needs
• Ability to safely supervise children in all areas of the building, inside and outside
• Ability to understand limited role of classroom assistant with respect to teacher responsibilities
• Proficient with computer using MS Office and Google programs, printer, fax, and phone

BASIC REQUIREMENTS:

• Minimum of sixty (60) semester hours from an accredited college/university or Missouri substitute certificate
• Friendly, helpful attitude in working with students and staff
• Positive, caring manner with children

EQUIPMENT USED:

• Standard office equipment
• Science lab equipment

WORK ENVIRONMENT:

• While performing duties of this job, the employee is regularly required to sit, talk, hear, walk, stand, and reach

Position Type: Full-Time

Job Requirements

• Citizenship, residency or work visa required