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, located near Long Island in the Bahamas, was previously considered the worldâs deepest underwater sinkhole. Also a top location for divers, Deanâs Blue Hole has a diameter of about 82 to 115 feet on the surface, reports Atlas Obscura, but widens to about 330 feet as it deepens.