I'm a sophomore in high school and I've been accumulating a lot of community service such as playing at nursing homes every month or so, volunteering at my synogogue, etc. I have a notebook where I keep track of all the dates and hours that I volunteer, but do I need some signed proof? I was going to just have an authorative figure sign next to the event in my notebook, but that doesn't seem very, er, professional. Do I need to write up a letter and have them sign it or something similar? Would a college ever ask for these tangible pieces of evidence?