The Summative Assessments are aligned with the Common Core State Standards (CCSS) for English language arts/literacy (ELA) and mathematics. The tests capitalize on the strengths of computer adaptive testingâefficient and precise measurement across the full range of achievement and timely turnaround of results.
Kola wellâs derrick in 1980: still the worldâs deepest hole (Credit: Wikipedia) Decades ago, the Russians drilled deeper than anyone has ever gone. Their Kola Superdeep Borehole was started in 1970 and still holds the world record for the deepest hole in the ground. But they didnât reach the mantle.
Dean's Blue Hole in the Bahamas was previously thought to be the world's deepest underwater sinkhole, at a depth of more than 660 feet. The Sansha city government in Hainan Province, China, said it has drafted measures to protect and study the blue hole in the South China Sea.