jambo ,when i was in a catholic junior secondary in the 90's they do.i believe they still do but google it .
Surah- Ar-Rum 30-22 "And among His signs is the creation of heavens and the earth, and the difference of your languages and colours. verily, in that are indeed signs for men of sound knowledge." Qu'ran
I have and also visited the website, i know they were there but have left, they go to many african countries and give help, but not to Gambia, I just wondered is it the politics that is keeping them out. because for every project that they have in other african countries it could be done in gambia