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

EFFECTIVENESS

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

IMPACT

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

RELEVANCE

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

SUSTAINABILITY

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

EFFICIENCY

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

ENVIRONMENTAL

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.