[ElvisMom]

We also find that some of our adults (parents) prefer the polo to a t-shirt, especially those who can wear a polo to work.

We have ordered polos in bulk for uniformity for the purposes you describe just using a local vendor (one of our area mom's does most of the school district work and we use her too). A good local resource can order the shirts, knows how they run for size and quality, etc.

Personally, I've also picked up items in team colors on clearance at large retail stores and had them embroidered. Our gal has the logo and will do individual work. Picked up quarter-zip pullovers for $3 and paid $5 for logo.