2.2.5 Sampling by the Chief Examiner or Team Leader Each examiner is expected to make a certain number of scripts on the first day of marking. The team leader collects a percentage of marked scripts from the examiners (often 10-20%), and reads through them again in order to give an independent mark (that is called “blind marking”) to find whether the examiners marking properly. The process of sampling should be continued throughout the marking period in order to narrow the differences in examinees.