1-junior high age and up; no language barriers; minimal cross-cultural setting; no missions experience required

2-junior high age and up; moderate language barriers; moderate cross-cultural setting; missions experience helpful

3-senior high age and up; some language barriers; challenging cross-cultural setting; missions experience helpful

4-adults (some mature senior high); increased language barriers; intense cross-cultural setting; missions experience required

L=LOW RISK (western country or major city in developing world)

I=INTERMEDIATE RISK (developing country, travel outside city)

S=SUBSTANTIAL RISK (few western amenities, marginal medical system, political unrest sometimes present, possible infectious disease)

H=HIGH RISK (few western amenities, marginal medical system, travel to remote areas, environmental extremes/altitude, heat, etc, infectious disease)

Pregnant women are not permitted to participate on projects rated as Intermediate, Substantial or High Risk.