In the file exchange, under the treasurer's section, and then budgets, the first report listed is "Performance to Budget Sample Report." That's a pretty good sample right there. Most financial reporting software will automatically generate a report for you, though. My favorite software at the moment is at www.moneyminder.biz.
Does anyone have a template for a treasurer's report? We are a brand new school and I have no clue where to begin designing my own. Any help would be greatly appreciated!