UNDER ARRESTDIANE SAWYER (ABC NEWS)(OC): And next, we return here at home, to the scandal rocking American schools tonight. Dozens of educators in Atlanta stand accused of fixing student test scores and doing it so they could reap the government bonus money. Tonight is the deadline for them to turn themselves in, and here's ABC's Steve Osunsami.
STEVE OSUNSAMI (ABC NEWS)(VO): One by one, implicated Atlanta teachers, principals and administrators surrendered at the county jail, accused of falsifying those student achievement tests to gin up scores. For some of them, bail set at $1 million or more.
WARREN FORSTON (ATTORNEY): Al Capone, as I understand it, didn't have to post a million dollar bond.
STEVE OSUNSAMI (ABC NEWS)(VO): Tonight, 35 face racketeering and other charges. At one school, they're accused of holding parties where they erased the wrong answers and filled in the right ones. Prosecutors say Superintendent Beverly Hall is most responsible, firing teachers who failed to cheat and giving handsome bonuses to those who did.
STEVE OSUNSAMI (ABC NEWS)(OC): These educators are fighting real jail time. The superintendent alone could see up to 45 years in prison if she's convicted.
STEVE OSUNSAMI (ABC NEWS)(VO): She and her staff say they didn't know teachers were cheating.
TAMARA JOHNSON (ACCUSED TEACHER): We are looking very forward to sharing the evidence that will clear all of our names.
STEVE OSUNSAMI (ABC NEWS)(VO): But today, we met a former teacher who says administrators knew darn well what was going on.
ROBIN GRANT (FORMER TEACHER): They knew because we told them.
STEVE OSUNSAMI (ABC NEWS)(VO): Robin Grant says she and six teachers were fired when they blew the whistle on their principal and others who were allegedly telling students when their test answers were wrong.
ROBIN GRANT (FORMER TEACHER): We were fired for telling the truth.
STEVE OSUNSAMI (ABC NEWS)(VO): This investigation began after the Atlanta newspaper found suspiciously skyrocketing scores from year to year. And they found similar patterns across the country. Potentially, so many parents who may not know if their children need more help. Steve Osunsami, ABC News, Atlanta.
DIANE SAWYER (ABC NEWS)(OC): Let us show you the scene at the Vatican today.
DIANE SAWYER (ABC NEWS)(VO): Pope Francis prostrate in St Peter's Basilica, an act of reverence on this Good Friday, one of the holiest days of the year for Christians. And images have been streaming in from across the world to us. Pilgrims in Jerusalem, tracing the last steps of Christ. In India, marking the day Jesus was crucified and died.
DIANE SAWYER (ABC NEWS)(OC): And tomorrow, we will see the legendary Shroud of Turin for the first time in 30 years, amid reports of new and mysterious evidence about the sacred relic. Here's ABC's Alex Perez.
ALEX PEREZ (ABC NEWS)(VO): For the first time in 40 years, new images of the Shroud of Turin will be broadcast on television, the event marked by an introduction by Pope Francis himself. Believers are convinced the shroud covered Jesus' crucified body. The fabric is covered in bloodstains, dirt and watermarks, but its most often-debated attribute, this - the outline of a face. 1988 research seen here in this documentary, used carbon dating to determine the cloth was from medieval times and the whole thing was a hoax. But a new book by an Italian professor argues those tests were performed on fibers used to repair the shroud in the middle ages, that the cloth itself is from Jesus' time.
RUSS BREAULT (SHROUD OF TURIN EDUCATION PROJECT INC): When you consider that there are no substances on the cloth that were conceivably used by an artist and the fact that the blood on the cloth is human blood, it would suggest that the cloth is probably authentic.
ALEX PEREZ (ABC NEWS)(VO): But how did that image get there? One theory - ammonia vapor released by a body mixed with the linen. No confirmed relics exist of Jesus' life, but historians agree that he lived. In about 93 AD, The Roman historian Josephus wrote about a man named Jesus, describing "a wise man, if it be lawful to call him a man, for he was a doer of wonderful works." Other Roman authors wrote of his baptism by John the Baptist, his crucifixion by the roman emperor Pontius Pilate.
ALEX PEREZ (ABC NEWS)(OC): The mystery over the Shroud of Turin has boggled minds here at the Vatican and around the world for centuries, but some say whether it's real or not doesn't matter.
ALEX PEREZ (ABC NEWS)(OC): Does it matter if it's real or not?
PEDESTRIAN (FEMALE): I think it depends on the person. I think it's really an individual choice and that for some people that what is really - that matters is just the symbolic and what it respects.
ALEX PEREZ (ABC NEWS)(VO): And for many, believing Jesus was wrapped in this cloth is more important than knowing. Alex Perez, ABC News, Rome.