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.
Aerial video of 'world's deepest' underwater sinkhole in South China Sea. This stunning aerial video shows the world's deepest underwater sinkhole, according to scientists in China. Researchers studying the blue hole in the South China Sea reckon that it is 300 metres deep. The team says it looked at things like tidal water levels and temperature to work out the depth.