A board supervises; an executive team delivers. Assessing one tells you almost nothing about the other.
Why it matters when the plan changes
The two are conflated in practice because both are senior and both involve assessing people. The consequences differ. A finding that the board lacks a skill leads to a nomination decision; a finding that the executive team cannot carry the plan leads to a change in the plan, the roles or the people. Mixing them produces recommendations pointed at the wrong body. A board is a governing body that supervises the activities of a business, a distinct function from executing a plan, and governance codes treat composition, succession and evaluation as a board responsibility.
The tension is that the boundary blurs where the chief executive sits. They are assessed as part of the executive and are accountable to the board, and the board's effectiveness depends partly on how that relationship works. The sharper question is what must change at that interface for the plan to succeed. That single overlap is where the two exercises legitimately meet, and it is also where they most often get muddled.
In practice
A group commissions a governance review after a difficult year. The report covers board papers, agenda time and committee structure, and concludes the board is functioning adequately. The actual problem is that the executive team cannot make cross-functional trade-offs, so everything escalates. The review examined the wrong group and found nothing wrong.
Evidence
A board is a governing body that supervises the activities of a business, which is a different function from executing a plan.
Board of directors, Wikipedia (2026)Governance codes treat composition, succession and evaluation as a board responsibility, distinct from executive capability.
Financial Reporting Council, UK Corporate Governance Code (2024)
What it cannot tell you
The distinction between board evaluation and leadership assessment tells you which body a finding belongs to, not what caused it or how to fix it. It does not indicate whether a governance gap stems from composition, information or dynamics, nor whether an executive weakness reflects the person, the role or the plan.
Questions
It can be commissioned as one project but should produce two distinct sets of findings. The UK Corporate Governance Code (2024) treats composition, succession and evaluation as a board responsibility, separate from executive capability, so a single blended conclusion tends to point at whichever group is easier to change.
At the chief executive, who is assessed as part of the executive and is accountable to the board. Wikipedia (2026) defines a board of directors as a governing body that supervises the activities of a business, a distinct function from executing it, and that supervisory relationship is where the two exercises meet.
Whichever matches the problem. If plans are approved and not delivered, the executive question is the live one. If the board is surprised by things it should have known, the governance question is. Starting with the wrong one produces a clean report and an unchanged situation.
A board evaluation goes to the chair, or the senior independent director where the chair is in scope. A leadership assessment goes to whoever owns the consequence of the plan, which may be the chief executive or the board depending on what is being decided.
Partly. Both involve interviews, document review and observation of how decisions are actually made. A leadership assessment adds behavioural evidence read against role demands. A board evaluation adds examination of composition, information flow and committee functioning that has no executive equivalent.