Founder/CEO
Schedule Validator
John Jackson is a forty-year veteran of scheduling and delay expert witness. As the president of the international Project Management College of Scheduling (PMCOS), he is at the forefront of scheduling innovation in the construction industry. He is also the Founder and CEO of Schedule Validator. With his visionary approach and his collaboration with leaders in the scheduling industry, he is transforming how construction schedules are analyzed and reported through cutting-edge online tools. Countless organizations rely on his experience to streamline their operations, improve accuracy, and deliver projects on time.
United States 













