CDL licence

Im a full time college student barely earning an income because im helping take care of my disabled sister and my family that i have back home in Gambia,  West Africa, Im the last child out of seven kids and none of them can help me because they're working and sending money to there own family back home in Gambia as well.  I also give back to the community by volunteering as an Auxiliary Police Officer I love what i do for people and that will never change. Im trying to persue a career as an Bus Operator and in order for me to move on i need to get Commercial Driver Licence Class B with Passenger, Air brakes, and School Bus Endorsements. I got the permit already and the only thing now i need is my license and in order for me to do that i have to pay the driving school for the bus to provide for the road test and on the road practice.