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.
Deanâs Blue Hole, The Bahamas â The worldâs deepest known blue hole (underwater sinkhole) with seawater. It plunges 202 meters (663 ft) near Long Island, Bahamas. Deanâs Blue Hole is roughly circular at the surface, with a diameter ranging from 25 to 35 meters (82â115 ft).