Samuel Eshaghoff remembers being shocked when, 15 years ago, the Nassau County District Attorney’s Office called his family’s Great Neck home and told his mother he was suspected of being the ringleader of an SAT cheating operation. "Couldn’t believe it. There was no precedent to suggest that anything I’d been doing was against any laws," Eshaghoff, now 34, told Newsday, days before the anniversary of a scandal that led to the arrests of himself and teenagers who had paid him between $1,500 and $2,500 each to impersonate them on test day for scores as high as the 98th percentile. On Sept. 27, 2011, Eshaghoff became the face of the scandal, which grew to involve 20 youths — five who took tests for 15 clients from five Long Island schools. The case spurred tighter test-security protocols nationwide, provoked soul-searching over whether the stakes of testing had become too high, and foreshadowed the 2019 Varsity Blues bribery scandal, in which the rich paid millions to get their kids i...