community work, possibly i'll be doing community y work, becausi feel i have a passssion for te vulnerablelereporter: her son favoured is proud of her. favoured: i feel good because my mother is also learning, so one day she can become a nurse. i'm learning so i can become an engineer. when i grow up, i'll take care of my parents. reporter: toto have a better le -- that's also samuel lekulate's goal. he went back to school at the age of 42. in the country town of ngong, adults learn side by side with children. but samuel needs a lot more tite ththan they do, especially in biology and chemistry. samuel: i have to try because after the classes i have to meet with some teachers of those subjects and tell them to continueue with me, ababout 30 miminutes. reporter: one reason for this is that samuel does not always come to class. anne: come, for example, monday, skip tuesday, come on wednesday. so y you will fifind that they continue lagging behind in learning, so you have to repeat what you taught previously for them to understand. reporter: but samuel h has a hd back home that he has to take ca