Our data retention period will vary based on contracts with our clients and legal requirements.</p> <p>Cambium Assessment has data archival and retention policies for our registration system, roster tracking system, test delivery system and analysis applications. Policies include schedules for purging data from files and databases based on what is to be purged and when. Again, this varies by contract, however, typically at the start of every school year, attributes and relationships logs and data tables from old school years are deleted. Student demographic data may be maintained across years, until the end of the contract with the customer. Analysis data is retained for 2 school years.</p>