Growing up in third-world countries I saw first-hand how their education systems were under-funded and lacked basic supplies and tools for teaching. But it wasn't till then that I realized how great the need actually was. I literally could've brought hundreds of laptops and spent months distributing them and still not covered a fraction of the area I was in.
My particular passion is giving needy schoolchildren a chance to join the digital age with old hardware and software that in a country like the US we would typically throw away. I believe that if you can help schoolchildren learn better you can help much more than just their grades: you can help their entire country. This is the Smart Kids Foundation.