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Executive Management

Nathaniel (Nate) A. Davis
Chairman and Chief Executive Officer

Nathaniel (Nate) A. Davis

Nate Davis, Chairman and CEO of K¹², is a seasoned leader of transformational telecommunications, media and software development companies, with a record of improving operations, launching innovative new products and strengthening relationships with legislative and regulatory authorities.

Mr. Davis, joined the K¹² Board of Directors in 2009, was named Chairman of the Board in June 2012, assumed the role of Executive Chairman in January 2013 and was named Chairman and CEO in January 2014. In his current role, he is responsible for overseeing all operational and corporate functions of the company with a focus on excellence in academic, operational and financial performance.

Mr. Davis joined the company from the position of Managing Director of RANND Advisory Group, a consulting group advising venture capital, media, and technology-based firms. He previously served as Chief Executive Officer and President of XM Satellite Radio and was a member of the company's Board of Directors, where he strengthened operations and financial performance and led the company through its merger with Sirius Satellite Radio.

From 2000 to 2003, Mr. Davis was President and Chief Operating Officer, and board member of XO Communications Inc. Mr. Davis has also held senior executive positions at Nextel Communications (EVP, Network and Technical Services), MCI Telecommunications (Chief Financial Officer and various other management positions) and MCI Metro (President and Chief Operating Officer).

Mr. Davis currently serves on the Board of Directors for Unisys and the Board of Trustees for RLJ Lodging Trust.

Mr. Davis received an MBA from the Wharton School of the University of Pennsylvania, an MS in Engineering Computer Science at the Moore School of the University of Pennsylvania, and a BS in Engineering from Stevens Institute of Technology.

Timothy L. Murray
President and Chief Operating Officer

Timothy L. Murray

Timothy L. Murray joined K¹² in April 2012. He is an accomplished executive with decades of experience working for successful public and private companies. Most recently, Mr. Murray served as Chief Executive Officer of Pulsepoint, Inc., a digital media technology company formed by the merger of ContextWeb, a top-rated advertising exchange, and Datran Media. He joined ContextWeb in March of 2010 and served as the company's CEO.

Prior to ContextWeb, Mr. Murray was Chief Operating Officer of Dialogic Inc., overseeing the daily operations of all aspects of sales, customer service and support, engineering, marketing, manufacturing, quality initiatives, and human resources. Dialogic acquired Cantata Technologies, where Mr. Murray was CEO.

Mr. Murray began his career at AT&T in 1980 and over the next twenty years was promoted to positions of increasing responsibilities, including in sales, marketing, operations, engineering, and product management. He left AT&T in 2001 after serving as Executive Vice President, Business Service Operations.

Mr. Murray received a BS and MS in Management and Industrial Engineering from Rensselaer Polytechnic Institute.

James Rhyu
Executive Vice President and Chief Financial Officer

James Rhyu

James Rhyu, Executive Vice President and Chief Financial Officer, joined K¹² in June 2013. Mr. Rhyu has more than 20 years of financial management experience in various global industries.

Prior to joining K¹², Mr. Rhyu served as Chief Financial Officer and Chief Administrative Officer of Match.com, a subsidiary of publicly traded IAC/InterActiveCorp. In those roles, he was responsible for overseeing a broad range of functions, including human resources, legal, information technology and operations, certain international operations and product development.

Prior to his roles at Match.com, Mr. Rhyu was a Senior Vice President of Finance at Dow Jones & Company, where he ran the global financial function. Previously, Mr. Rhyu served for three years as the Corporate Controller of Sirius XM Radio Inc. and its predecessor company, XM Satellite Radio, as well as serving in the same role for Graftech International. Mr. Rhyu also spent six years with Ernst & Young LLP in the United States and South America.

Mr. Rhyu holds a BS from the Wharton School of Business at the University of Pennsylvania and an MBA from the London Business School.

Howard D. Polsky
Executive Vice President, General Counsel and Secretary

Howard D. Polsky

Howard D. Polsky, Executive Vice President, General Counsel and Secretary, joined K¹² in 2004. Mr. Polsky has a unique combination of legal and public policy experience.  

Prior to joining K¹², Mr. Polsky served as Vice President and General Counsel of Lockheed Martin Global Telecommunications, where he managed a wide range of legal matters including antitrust, telecommunications, employment, commercial contracts and transactions, litigation management, mergers and acquisitions, foreign joint ventures, intellectual property, and corporate governance and compliance.

From 1992-2000, Mr. Polsky was at COMSAT and held both legal and government relations positions. He spent four years on the senior management team as Vice President of Federal Policy and Regulation. In that capacity, he developed critical corporate policy initiatives and advocated extensively before the FCC, Executive Branch, Congress, and within intergovernmental organizations. Regulatory risk assessment and communications with institutional investors on policy matters was also his responsibility.

For the prior nine years, Mr. Polsky was a partner at Wiley, Rein & Fielding where he represented a variety of U.S. and international communications clients in administrative and judicial proceedings.  He began his legal career at the FCC and Kirkland & Ellis.

Mr. Polsky received his JD. from Indiana University and was an editor of the Indiana Law Review, holds a BA from Lehigh University, and is a member of Phi Beta Kappa. Mr. Polsky is admitted to practice in New Jersey, Pennsylvania, Virginia (corporate counsel), and the District of Columbia. Mr. Polsky has recently been appointed as a board member for the Lehigh University Advisory Council to the College of Arts and Science.

Allison Cleveland
Executive Vice President of School Management and Services

Allison Cleveland

Allison Cleveland, Executive Vice President of School Management and Services, joined K¹² in October 2002.

During her time at K¹², Ms. Cleveland has been instrumental in building the managed public school line of business. Most recently, she served as the Senior Vice President of School Services, overseeing academic and operational services in the managed public schools. Prior to that, Ms. Cleveland was the Regional Vice President of the Southern Region, responsible for schools in the Southeast portion of the United States.

In her early years at K¹², Ms. Cleveland worked in support of new school start-up and school operations, where she was responsible for the successful launch of K¹²; Virtual Academies throughout the country.

Ms. Cleveland began her career at Andersen Consulting, where she focused on clients in the telecommunications industry and government. She holds a BSE in Biomedical and Electrical Engineering, cum laude, from Duke University and an MBA and MA in Education from Stanford University.

Chuck Sullivan
Executive Vice President and Chief Marketing and Enrollment Officer

Chuck Sullivan

Chuck Sullivan, Executive Vice President and Chief Marketing and Enrollment Officer, oversees the company's Integrated Marketing Strategy, Customer Acquisition, Business Line & Field Marketing, and Market Research teams. Mr. Sullivan joined K¹² in 2013.

Prior to K¹², Mr. Sullivan was a principal at CCS Advisory Services LLC, a marketing strategy firm that provides advice to Fortune 500, private equity, and venture-backed clients on branding strategy, omni-channel planning and execution, advertising, website design, retail e-commerce optimization, mobile, social media, and CRM.

Prior to CCS Advisory Services, Mr. Sullivan was Senior Vice President, Global Online Services at Hilton Worldwide where he had global responsibility for the Hilton Worldwide online presence, including 10 brands and 3,950 hotel websites, paid search, online advertising, mobile marketing, and social media. Before joining Hilton Worldwide, Chuck held executive roles at Chrysler Group LLC and Ford Motor Company, as well as Organic Inc., a digital agency owned by Omnicom. His early career was with Andersen Consulting (now Accenture) and Caterpillar, Inc.

Mr. Sullivan holds an MBA in finance from the Wharton School of the University of Pennsylvania and a BA in marketing from Michigan State University.

David Cumberbatch
Executive Vice President and Chief Strategy Officer

David Cumberbatch

David Cumberbatch joined K¹² in 2014, as Executive Vice President and Chief Strategy Officer. In this role his is responsible for collaborating and executing on K¹²'s long-term corporate strategy as well as partnering to identify partnerships and other ventures that support our key objectives. Finally, he manages our International Operations in the UK and further development of our International interests.

David has a diverse business development, product, and brand management background in both the education and technology fields. Prior to joining K¹², he held the position of Chief Corporate Ventures Officer at ACT, Inc. in which he provided executive oversight in the areas of mergers and acquisitions, strategic alliances, and corporate development to advance ACT's social impact mission and corporate strategy. Before joining ACT, David served as Vice President of Corporate Strategy for Career Education Corporation, a global education company operating over 85 online and ground schools, colleges and universities and earlier in his career, David held marketing and product management roles at Simpletuition, where he was part of the founding team, Sharebuilder, Microsoft and Procter & Gamble.

David earned a BA in Computing and Economics (Honors, First Class) from Eliot College, the University of Kent at Canterbury, and earned his Master of Philosophy (MPhil) in Management Studies from the University of Oxford where he earned the distinction of being elected a Rhodes Scholar.

Lynda Cloud
Executive Vice President, Products

Lynda Cloud

Lynda Cloud, Executive Vice President, Products, joined K¹² in September 2014. As the head of K¹²'s Curriculum and Products organization, she oversees the development and delivery of all program content and customer-facing technologies, and drives the product strategy and results across all areas of the business.

Prior to joining K¹², she was with Pearson Publishing for more than 20 years, where she held senior leadership positions in Product Development, Marketing, and Product Management. In her role as Pearson's General Manager (for Science, Humanities and Online Learning Exchange), she drove strategy for the company's print and digital properties in the North American educational market.

Joe Zarella
Executive Vice President of Business Operations

Joe Zarella

Joe Zarella, Executive Vice President of Business Operations, has more than 20 years of successful Customer Service, Sales & Marketing Operations, and Information Technology management experience.

Prior to joining K¹² in 2014, Mr. Zarella served as Chief Service Officer for SiriusXM Satellite Radio and its predecessor company, XM Satellite Radio, since 2006. In this role, he lead the company’s Sales, Marketing, Customer Service and Retention Operations, where he successfully grew Revenue, Customers and Profitability to record levels, contributing to make SiriusXM the world’s largest revenue grossing Radio Company.

Before joining XM Satellite Radio, he served at Constellation NewEnergy as Managing Director of Operations, where he was responsible for setting the Corporate operations consolidation strategy. Prior to that, he was Vice President of Revenue Operations for XO Communications for six years, which came after 10+ years at MCI Communications serving as Vice President of Financial Operations and holding several executive operations leadership positions.

Mr. Zarella holds a BS in Information Systems from the University of Massachusetts, and an MBA in International Finance from the University of Dallas.

James Donley
Senior Vice President and Chief Information Officer

James Donley

James Donley, Senior Vice President and Chief Information Officer joined K¹² in July 2012.

From 2006 until his present role, Mr. Donley served as CIO at Ciena Corp, a telecommunication solutions provider, a role which included managing the acquisition of the Metro Ethernet division of Nortel. Prior to his Ciena position, Mr. Donley was CIO beginning in 2000 at Acterna (now JDSU), a test and measurement solutions provider in the telecommunication industry.

Mr. Donley previously served the automotive industry, spending 10 years in numerous roles within Ford including responsibility for IT worldwide for its two largest manufacturing divisions and foreign assignments in the Czech Republic and France, and 5 years with Chrysler in computer integrated manufacturing.  Mr. Donley's early career included working for NASA at the Kennedy Space Center on the space shuttle program.

Mr. Donley holds a BS in Computer Science from Wayne State University in Detroit as well as a MS in Administration from Central Michigan University.

Bryan W. Flood
Senior Vice President, Public Affairs

Bryan W. Flood

Bryan W. Flood, Senior Vice President, Public Affairs, joined K¹² in 2002.  Mr. Flood previously served as a public affairs strategist, consultant, and spokesman for corporations, interest groups, and senatorial, gubernatorial, and presidential campaigns.

As Vice President at the MPGH Agency, a Virginia-based public affairs consulting firm, he advised clients ranging from high tech start-ups to Fortune 500 firms, including several leading education companies. Mr. Flood helped clients like MCI, The Learning Company, and Achievement Technologies win complex public policy and opinion battles by designing and managing advocacy campaigns at the local, state, and national levels. While serving at MPGH in 1999, Mr. Flood helped direct a sweeping review of the military recruitment process for the United States Department of Defense.

Mr. Flood was chief spokesman for Michigan Governor John Engler's successful reelection campaign in 1994, and was national spokesman for United States Senator Lamar Alexander's presidential campaign in 1995-96.

Mr. Flood holds a BA in Public Policy from New College of Florida.

Margaret (Margie) Jorgensen
Senior Vice President and Chief Academic Officer

Margaret (Margie) Jorgensen

Margaret Jorgensen, PhD., Chief Academic Officer, an expert in the use of educational assessments as a powerful instructional tool, joined K¹² in February 2013 as Chief Academic Officer (CAO). As CAO, Dr. Jorgensen is helping lead K¹²'s ongoing efforts to develop state of the art curriculum, technology, learning systems and teacher support; to improve performance for all students, including advanced learners but especially among the growing population of academically at-risk students in its network of managed public schools; and to innovate with assessments that not only more accurately reflect student progress but also can be used to improve learning and accountability.

A recognized industry innovator and an inventor with a patent for an innovative multiple choice assessment technique, Dr. Jorgensen joined K¹² from the position of CEO of Measure2Learn, which she founded in 2006 to develop technology products combining assessment and instruction and to provide psychometric consulting services to companies and educational institutions. Prior to K¹², Dr. Jorgensen served as managing director at Battelle for Kids, a non-profit enterprise focusing on several aspects of educational reform, including teacher effectiveness and strategies to transform low-performing schools.

As Senior Vice President and before that Vice President, Product Development, Psychometrics and Research for Harcourt Assessment, Inc., Dr. Jorgensen led the development of a series of innovative education and assessment products and was responsible for expanding expertise in assessment across the company's business units. Previously, she was Assistant Vice President for Development, ACT, Inc., where she supervised test development programs, a Senior Examiner for the Educational Testing Service, supporting the state-by-state roll-out of the National Assessment of Educational Progress for the Southern Regional Education Board, and an Assistant Professor at Emory University.

Dr. Jorgensen earned her Ph.D. in Measurement, Evaluation and Statistical Analysis at the University of Chicago, a Master of Science in School Psychology at Miami University, an MBA at the University of Texas at San Antonio and a BA in Political Science at Wellesley College. She is also the author of two books and nearly two dozen scholarly articles and book chapters.

Valerie Maddy
Senior Vice President, Human Resources

Valerie Maddy

Valerie Maddy, Senior Vice President, Human Resources at K12 Inc., brings more than 20 years of global leadership and innovation in the full range of human resources disciplines. At K¹², Ms. Maddy is leading the development and implementation of new systems, processes, policies and programs aimed at maximizing every employee's contribution to student academic success. As part of that effort, she is working with business teams to drive alignment, clarity and competitive advantage across the company and plan, acquire, develop and retain the talent required to achieve organizational goals.

Prior to joining K¹², Ms. Maddy was Vice President, Global Human Resources Operations for Ciena Corporation, a global leader in next-generation network infrastructure, where she introduced reliable automation to HR systems, significantly increasing efficiency levels, and led the HR due diligence efforts and integration activities of eight acquisitions. Before rising to this position, Ms. Maddy served in a number of leadership roles at Ciena in the areas of Global Total Rewards and Global Risk Management.

Earlier in her career, Ms. Maddy held leadership roles in Human Resources and Finance at Crown Vantage, a specialty paper manufacturer and distributor. Prior to that, she served in Human Resources and Auditing roles at SAFECO and American General, both providers of financial and insurance services.

Ms. Maddy is a graduate of Humboldt State University, where she earned her Bachelor of Science in Business Administration. She holds a certificate in Global Benefits Management, a designation from Fellow Life Management Institute, and is also a Certified Employee Benefits Specialist and Certified Internal Auditor.

Peter Stewart
Senior Vice President of School Development

Peter Stewart

Peter Stewart, Senior Vice President of School Development, works with parents, teachers, community groups, school districts, school boards, departments of education, and policy makers across the United States and internationally to start new high-tech schools that use the K¹² academic program.

In the past seven years Mr. Stewart has helped develop large-scale, public e-learning programs in sixteen states that currently serve over 100,000 courses annually.

Prior to joining K¹² in 2000, Mr. Stewart was a Head of School, a teacher, a school principal, and a curriculum director with ten years' experience working in urban, rural, and international schools.

Mr. Stewart holds a BA in English from Williams College, and an MA from Columbia University Teachers College.