Just as a personial testimonial, I led a youth group on a short-term missions trip last summer using Mission to the World (MTW) and I would not describe it as particularly reformed. It will depend a lot on the particular work you choose. The funnel for participants seemed pretty wide to me. There were a number of PCUSA churches attending the same work that were as Arminian in their evangelism as you could get. We arrived on the scene after them and they left us a note that they had 13 people come to Christ! We were very excited to meet these 'converts', but guess what? Not one of them ever attended worship, was baptized, or even talked to an elder about their 'conversion.' Oh well, I sure am glad the evangelists before us assured them of eternal life after having prayed the prayer. [img]http://www.the-highway.com/w3timages/icons/crazy.gif" alt="crazy" title="crazy[/img]<br><br>Don't get me wrong, the experience was a blessing to us in many ways, and I would probably consider MTW again since we have few options as an independent church, but I would just strongly recommend discernment and serious investigation with the particular church involved for each particular work if one truly desires to participate in a Reformed community.<br><br>One Reformed work that I would definitely recommend is Middle East Reformed Fellowship. Other than that, I don't know of many Reformed denominational missions programs where someone from outside the denomination would be easily involved. I e-mailed the OPC asking about any ways in which our Congregational church could participate in some kind of missions work, but never heard from them. My experience with them is that if you are not a part of their denomination you will have a hard time getting anyone's attention. This could just be my experience, so take that for what it's worth.<br><br>Regards,<br><br>~Jason