Rollins College | Crummer Graduate Certificate in Advanced Entrepreneurship | Rollins Business Accelerator. Questions? Contact Rollins College at 407-646-2405. The Rollins Business Accelerator is a 12-week graduate certificate in advanced entrepreneurship program for qualified growth-stage entrepreneurs. The program is offered in partnership with Rollins’ Center for Management and Executive Education and focuses on helping participants learn to strategically evaluate their businesses and develop a plan for growth while maximizing cash flow for future profitability. Sessions are taught by successful entrepreneurs and Rollins MBA faculty in a highly interactive, peer-to-peer environment.