So is this a good way to keep track of my community service hours?

<p>I found a community service sheet online, edited it a bit, but it basically has my name, school, ID, and a table of the date and time I worked, what I did and the teacher's signature. There's not that much space to write much and that wouldn't be a proof really, however if they wanted to call the places I worked they can, do you think that's all I need?</p>