Administrative Assistant (Part-Time) - 2026/2027 School Year

Job Description

Job Description

About Mastery:

Founded in 2001, Mastery Schools is a public charter network of 23 K-12 schools in Philadelphia and Camden, serving more than 14,000 students. 

At Mastery, we’re on a mission to provide all students with the academic and personal skills they need to succeed after graduation and pursue their dreams. Student achievement is not just a goal for our organization; it's the reason we exist, and every member of our team is dedicated to securing student success. We are also committed to pursuing equity, actively disrupting systemic racism, and addressing the disparities that limit our students' choices. 

Our culture is built on respect, service, and the belief that the success of our students, their families, and the communities we serve will help us achieve our mission. We foster a positive, open, and inclusive environment where honesty, humor, and continuous improvement are celebrated.

Join us in creating a model urban school district that serves all students with excellence. Together, we can make a lasting impact.

The Opportunity:

The Administrative Assistant is responsible for supporting the daily operations of the schools reception area presenting a high achievement culture to all students, visitors and parents. The Administrative Assistant is ready to ask students to uphold school standards in between completing administrative tasks at the front desk. This employee will answer the phones, sort mail, file, fax, create and maintain databases and any general administrative duties as needed.

Duties and Responsibilities:

• Answering general inquiries, directing and screening phone calls
• Greeting parents and visitors to the school and directing them to the appropriate location
• Creating and maintaining databases such as Excel and the School Computer Network for student records, school equipment inventory etc.
• Placing orders for departments and tracking the order process for the individual school
• Managing of office supplies for the front office
• Overseeing mailing and shipping delivery systems
• Maintaining conference room calendar and scheduling meetings as needed
• Aiding in student enrollment process for school in regards to paperwork completion and follow up phone calls
• Opening and closing of the school front reception facility
• Communicating to students with high expectations for academic achievement and appropriate behavior in and outside the classroom
• Maintaining a positive and welcoming environment for parents, visitors, coworkers and students
• General administrative duties as assigned

Qualifications:

• Ability to relate to a diverse population of students and parents a must
• Advanced proficiency in computer skills specifically, Microsoft Office: Outlook, Word, Excel and PowerPoint, and ability to learn new programs/software quickly
• Proven experience multi-tasking, organizing and prioritizing work
• Ability to handle requests and inquires and respond within a timely manner
• High attention to detail
• Performs duties with a high degree of professionalism and positive energy

Education and Experience:

• Three to five years administrative assistant experience is preferred

Physical Requirements:

• Ability to physically perform the duties and to work in the environmental conditions required such as maneuvering in classrooms; Standing, walking, sitting for long periods of time, speak loudly and clearly, seeing and hearing things both near and far away, stooping, kneeling, fine finger and hand manipulation in use of a computer, chalkboard, dry erase board or projector; Must be able to sit for up to two (2) hours looking at a computer monitor, using a keyboard and mouse and typing.

Salary and Bonus Information:

• This role is eligible for a $500 signing bonus!
• New administrative assistants start at $18.75, with Mastery offering up to $23.92 based on experience and education. Hourly rates range from $18.75- $29.33, with growth opportunities as your career progresses. 
• This is a part-time role where you will work a total of 29 hours/week, Monday-Friday.

Mastery's Benefits Package:

We offer a full benefits program and opportunities for professional growth. Some of our most popular benefits include our 403(b) retirement plan for PA employees (with a 5% match from Mastery for full-time employees), enrollment in the State of New Jersey Pension Plan for NJ employees, a robust Employee Assistance Program, mental health and counseling programs, an annual Professional Development Fund, and discounts and perks at a myriad of retailers, travel organizations, insurance providers, and so much more, as well as access to the Health Advocate Helpdesk to help you navigate various benefits-related topics.  Please go here to see all of our Benefits offerings!

Annual Calendar:

As you plan to make Mastery your new work home, please feel free to review our  calendar here . We like to think our calendar is a benefit of working here too!

Why You Should Apply:

Studies have shown that women and people of color are less likely to apply for jobs unless they believe they can perform every job description task. We are most interested in finding the best candidate for the job, and that candidate may come from a less traditional background. Mastery may consider an equivalent combination of knowledge, skills, education, and experience to meet minimum qualifications. If you are interested in applying, we encourage you to think broadly about your background and skill set for the role.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist Mastery's Talent Acquisition Team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.