I've been volunteering with different organizations for about 3 years now, and by the time I end up applying, it will have been for about 5. I'm a non-trad (27), so these aren't high school hours, they've been done while working and going to school. I've accumulated about 500 hours with one organization, and about 300 with another. Can I include all these, or is there a "anything past X years doesn't matter" I should know about?