Apart from that, the dosage of the drug, its quality, and period and potency play an important role during the drug test. Urine test reveals positive result for 1-7 days. The half-life of drug is just 24-36 hours, and it may remain in your system from 7 hours to 52 hours. Half-life refers to the time taken to eliminate half of the drugâs effect; A drug takes 4-5 half lives to get expelled out of your system completely.
The Passed/Not Passed (P/NP) grading option was designed to encourage students to explore new academic areas or take challenging, far-ranging courses without undue concern about grades. Passed grades require a level of performance at least equal to a letter grade of C-.
The pass grades for A Levels are A*, A, B, C, D and E. The A* grade was introduced for higher education entry into top universities such as Oxford and Cambridge, and is awarded to candidates who achieve an A in their overall A-level, with a score of at least 90% at A2. There is no A* grade at AS or unit level.nitially, a student might study three subjects at A-Level and one at AS-Level, or often even four subjects at A-Level. However, due to decreasing public spending on education over time, a growing number of schools and sixth form colleges would now arrange for their pupils to study for three A-Levels instead of four.