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.
Today, the deepest hole ever created by humankind lies beneath the tower enclosing Kolaâs drill. A number of boreholes split from the central branch, but the deepest is designated âSG-3,â a hole about nine inches wide which snakes over 12.262 kilometers (7.5 miles) into the Earthâs crust.