What is the difference between a Chief of Staff and an Executive Assistant?

A Chief of Staff exercises independent judgment to determine what the organization needs and acts on it without being asked. An Executive Assistant executes decisions and tasks that others have defined. The compensation gap between the two roles is commonly $40,000 to $80,000 per year in base salary at the same seniority level.

Why do Chief of Staff roles only last one to two years?

The CoS role is typically created to solve a specific organizational problem. When that problem is solved, the need changes. This is a structural feature of how the role is designed — not a sign of failure. The same tenure number can describe three different outcomes: ending by design, ending by outgrowth into a larger seat, or ending badly. Planning for the transition from day one is the difference between those outcomes.

How do you get a Chief of Staff certification?

CoS Certified is a practitioner-built certification program for aspiring and current Chiefs of Staff. It covers role definition, the EA vs. CoS diagnostic, archetypes, company stage, salary negotiation, decision hygiene, and the first 90 days. Built by a practitioner with 20+ years of CoS-level work across financial services, healthcare, and publicly traded companies.

What does a Chief of Staff actually do?

A Chief of Staff multiplies the effectiveness of their principal by ensuring the right things get decided, the right things get done, and the right people are aligned — consistently and at speed. The role varies significantly by company stage: at seed-stage companies, the CoS is often building organizational infrastructure from scratch; at enterprise companies, the work is primarily influence, alignment, and strategic counsel.

What is the average Chief of Staff salary in 2025?

Chief of Staff compensation varies significantly by sector and company stage. Average base salaries range from $91,000 at entry level to $194,000 at executive level, with total compensation reaching $250,000 or above at major tech companies when equity is included. The gap between a genuine CoS role and a misclassified EA role at the same seniority level is commonly $40,000 to $80,000 per year in base compensation alone.

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Sherita Grinter, PMP Chief of Staff Certification

Why CoS Certified Was Built

I have spent more than twenty years doing CoS-level work — across financial services, healthcare, and publicly traded companies — before that title became as visible as it is now. I have watched people enter this role underprepared, exit it undervalued, and spend years doing the work without ever building the language to describe what they actually contributed.

These questions are not new. They are not unusual. They are what practitioners in this role carry — often alone, often without a community that gives them direct answers.

CoS Certified was built from these patterns. The curriculum was shaped by what practitioners actually need — a diagnostic for their role, frameworks for decision closure, a salary negotiation system grounded in real market data, a 30/60/90-day entry framework, and a clear account of what the AI shift means for the CoS seat. Not by what sounds good in a course description.

If you recognize yourself in any of the questions above, that is what this certification is for.

Sherita Grinter, PMP

Founder · CoS Certified · When The World Sees LLC

20+ years of CoS-level work across financial services, healthcare, and publicly traded real estate technology. Six Anthropic AI certifications. PMP, Google PM, ClickUp AI Expert. Richmond, Virginia.

CoS Certified — Aspiring & Senior Tracks

Built for the person already doing the work

Every other CoS course teaches the role. This one is built for the person who's already doing the work but can't prove it.

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