The following six criteria have been recommended by the OECD/DAC and adopted by KNPO as standard yardsticks for the evaluation of development interventions:


The extent to which a development intervention has achieved its objectives, taking their relative importance into account.


The totality of the effects of a development intervention, positive and negative, intended and unintended.


The extent to which a development intervention conforms to the needs and priorities of target groups and the policies of recipient countries and donors.


The continuation or longevity of benefits from a development intervention after the cessation of development assistance.


The extent to which the costs of a development intervention can be justified by


Given what we know about the potential environmental consequences of plastic, we must provide sufficient baseline data to make a satisfactory evaluation of environmental impact possible.