I have only recently became interested in Indonesia after a visit to Kalimantan. My main suggestion would be for the school group to approach the project from a balanced viewpoint, ie. try and understand the need for integrating conservation needs with the culture, development stage and politics of Indonesia. Solutions will not be simple, lateral thinking will be required, and quick-fix answers are unlikely to work. You will be doing the students a favour by teaching them this. Involvement of industry could also be addressed.
Money is often the limiting factor.
Large companies operating in developing countries are beginning to seek a greener image. Thus, a mining or petroleum company which only impacts a relatively small area might be interested in contributing funds towards the development and implementation of a park management plan, a baseline flora and fauna survey or whatever. Other more controversial issues you may want to address are illegal logging and poaching, but you will probably find that people are not particularly open in discussing these subjects. Good luck with any surveys you might undertake. Make sure you get hold of as much current information as possible eg.