When a new edition of the CLC is produced, teachers and students often ask about the future of the previous edition.

Although there are unlikely to be new developments for the 4th edition, schools which are unable to, or choose not to move to the 5th edition do not need to worry that the 4th edition will be rapidly and actively phased out. The 4th edition digital materials will continue to operate, for as long as they experience a reasonable level of use. We when take the decision to phase these materials out we will make sure this is communicated via our newsletters, social media, and website well in advance.