I went to Australia with PTP when I was in h.s.!
If you can get past the part about "it's an honor to be chosen to go" (which is baloney, they send letters to everyone) and you have the money, it's a great experience!
I really learned a lot and I have to admit it was fun going to places in Australia and our group being introduces as Student Ambassadors. We went to an Australian h.s. and sat in on classes for a day, we met Eisenhower's daughter at a dinner, we surfed on sand dunes, Sydney Opera house... etc. Before we went, like starting from about 6 months before, we had mini "history" lessons sent to us by one of our chaperones like weekly which got us excited about all we'd see and do.
There's a VERY detailed packing list they give you, like how may pairs of underwear to bring etc, and for especially the younger kids it helped them be a little more independent taking care of their things. There are strict rules about being neat and orderly and it was a good life experience.
About the fundraising, yes they did send letters about that but we chose not to participate in that. We were never hassled about it at all.
About it having any bearing on college, well it had none whatsoever for me.
Safety: we were very well supervised and could go no where without chaperones, not even in the hotels.
If you have the money to spare, I'd say DO IT! Your child will have the time of her life being with her peers across the world. She'll never forget it.