and act exams for his clients by instructing them to seek extended time for their children on college entrance exams which included having the children purport to have learning disabilities in order to obtain the required medical documentation once the extended time was granted singer allegedly instructed the clients to change the location of the exams to one of two test centers a public high school in houston texas or a private college preparatory school in west hollywood califat those test centers singer had established relationships with test administrators niki williams and igor dvorskiy respectively who accepted bribes of as much as 10000 per test in order to facilitate the cheating scheme specifically williams and dvorskiy allowed a third individual typically riddell to take the exams in place of the students to give the students the correct answers during the exams or to correct the students answers after they completed the exams singer typically paid ridell 10000 for each students testsingers clients paid him between 15000 and 75000 per test with the payments structured as purported donations to the charity in many instances the students taking the exams were unaware that their parents had arranged for the cheating