Care work, with immigrants, with the sick, drug addicts, the homeless is not only done by Christians and the Church. Many institutions participate in this kind of work, but there is no doubt that the work done by Christians, as a matter of percentage, is by far the most significant.
The same is true of education. In Spain there are about 6,000 Christian schools in which there are about 1,400,000 students. The fact is that we must teach those who lack education, but we must also take 2 things into account: the first, that it is not only in school that people are taught and the second, even if someone knows a lot and is very clever, we should always be open to learn more.