In order for Tiger Baseball to earn donations from your purchases, you need to shop on Amazon Smile. You should see “Gilbert High School Tiger Baseball Booster Club” under the search field.
What is the difference between regular Amazon vs Amazon Smile?
AmazonSmile is a website operated by Amazon with the same products, prices, and shopping features as Amazon.com. The difference is that when you shop on AmazonSmile, the AmazonSmile Foundation will donate 0.5% of the purchase price of eligible products to the charitable organization of your choice.