Pharmaceutical manufacturers and governments should collaborate to support a system of tiered-pricing, by which poor countries gain access to essential durgs at low prices, while manufacturers realize a reasonable return on their investments through higher prices in the developd world.

MTK:
In order to evaluate students with diverse background, the teacher announces a system of tiered-grading, by which students from different majors are evaluated on the observation of their personal progress, while students from this dept. are graded with stricker standard.