Leadership Team

Meet the visionary leaders driving our company toward success.
Leadership Team
Leadership Team

Lead with purpose

ISM began with a simple vision—to strengthen private independent schools by empowering school leaders who have dedicated their lives to helping children succeed. Today, ISM is a company of four divisions and nearly 25 departments still driven by the same mission—advance school leadership to enrich the student experience.

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Roxanne S. Higgins

Roxanne S. Higgins

ISM President and Senior Executive Consultant

Roxanne is the driving force behind our company, consulting with schools and guiding our Advisory. Her commitment to advancing school leaders is the cornerstone of our success. She enjoys sailing, beach adventures, and spending time with her family.
Chip Cresswell

Chip Cresswell

CFO | COO

Meet Chip, a master at balancing books and a devoted husband and father. When not at work, he enjoys DIY projects, outdoor adventures, and creating culinary delights. Recently recognized as a Titan 100 for the second consecutive year!
Gardner Barrier

Gardner Barrier

Executive Director of Advisory Services

Gardner is a proud dad, a devoted son and family member, and an enthusiastic servant leader. He enjoys creative problem solving (he was once told he is so outside of the box that it didn’t occur to him there was a box) and any opportunity to be outside and exploring!