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.
After nearly a year of exploration, Chinese researchers have determined that the underwater sinkhole is likely the worldâs deepest, reaching about 987 feet below the surface and surpassing the previous record holder, Deanâs Blue Hole near the Bahamas, by more than 300 feet, Xinhua News Agency reported.