Shopping aid
There are some websites that allow you to nominate a charity when you register with them.
You are then able to go to some well-known ecommerce websites and shop as normal. But a percentage of the profit from your online shopping will be donated to your nominated charity.
This donation is paid by the shopping site, it is not part of the price that the shopper pays.
The shopper benefits two ways. First they buy goods at a discounted price. And then they have the satisfaction of knowing that their nominated charity benefits. In fact everybody benefits!
Cashback when shopping
There are a number of online shopping websites that allow people to buy products online and a donation is made to the selected charity/charities. People can support their favourite charities, which includeds schools.