bonch writes "A new study on Greenland's and West Antarctica's rate of ice loss halves the estimate of ice loss. Published in the journal Nature Geoscience, the study takes into account a rebounding of the Earth's crust called glacial isostatic adjustment, a continuing rise of the crust after being smashed under the weight of the Ice Age. 'We have concluded that the Greenland and West Antarctica ice caps are melting at approximately half the speed originally predicted,' said researcher Bert Vermeeersen."
(I've taught science/math for past 15 years): In primary and secondary education any sort of curving is (and should be) looked down upon if not outright disallowed. If the average student scores an 94% on a test it should either be considered that the students learned the material or the teacher wrote too easy of a test. To tell a student that their 92% is worth a C because of how well other students did is poor practice because it shouldn't matter how well those students do - all that matters is how well the tested student meets the desired outcomes. All of my courses are graded on a pure percentage basis and if I write a poor exam (too easy) I record that for the next year; if I write too hard of an exam I either allow some form of a retake (it was a fair test but students didn't hold up their end of the learning bargain) or I scale the grades up (I wrote a poor exam that was too hard).
Students in one New Jersey school district will no longer be able to squeak by in class after the Morris County School Board approved dropping the D grade. Beginning in the fall students who don't get a C or higher will get an F on their report card. "I'm tired of kids coming to school and not learning and getting credit for it," said Superintendent Larrie Reynolds in a Daily Record report.
You complain about how students are taught by telling them the problems and answers. I've taught for the past 13 years in science and as soon as you do any reasonable inquiry you get complaints from both student and parents.. HE WON'T TELL MY SON THE ANSWER. Damned if you don't...