Education Development Center Inc. leased 120,000 square feet at 43 Foundry Ave. in Waltham, MA. The international education and health nonprofit signed a 10-year deal and will transfer 450 employees and its corporate operations to CenterPoint, a 23-acre, 500,000-square-foot office/lab/R&D park located about 11 miles west of Boston. The move is planned for November of next year.