For example:
What to consider:
Where your money goes – many companies charge thousands for placements. Choose companies who are transparent about where the money actually goes and how much, if any, is profit.
Safety protocols – you will probably be based in a rural setting in a third world country. You should research how your company will mitigate risk and what their emergency protocols are. What are their communication systems like, how do they access healthcare and how many staff are on the ground?
Training requirements – most reputable schemes either ask for some training or provide it for volunteers. If they don’t, question the value of your work.
What’s included in the price – the cost of programmes differ widely, so it’s worth checking what’s included. You could spend a considerable amount of extra money if you add on the cost of: food, drink, accommodation, airport pick-up, local excursions or language lessons.
Read the reviews – google the companies you are looking at, read the reviews – and not just on their own website. Talk to your friends to get the lowdown.