Question about Missionary Training for missionaries:
"Which correspondence programs in Bible can you recommend?"
Recognize, though, that online classes still require an investment of time and money; if you are taking classes and working full-time you will have to give up something else. Those in traditional residential programs often have fewer distractions or responsibilities to juggle. A program of study which could be completed in a year or two in residence may take you four or six years to complete when pursued online one class at a time.
Most of the classes have start and end dates. Some make use of online chats, group assignments, and other strategies that help students work together and persevere to the end - something with which many struggled in the days when independent, self-paced correspondence courses were more the norm.
Look at Moody Bible Institute and Liberty University and browse schools listed in the training section at Mission Finder. Also talk to a mission agency about which programs they recommend.
In almost every case you should take correspondence courses for credit that are college-level. There is one exception. We and some other agencies accept non-credit courses from Moody Bible Institute in Chicago. These are easier and cheaper, but they are good.
Will secular schools accept Bible credits? Some will. My daughter transferred from a Christian liberal arts college to Temple University in Pennsylvania. She was surprised to find that Temple allowed her Bible courses as electives. The only way to find out if a particular college does is to ask.
What we find as a great obstacle for potential missionaries is huge debt from college. By going to a secular university you may be able to minimize this. I encourage you to think of working hard during summers and breaks, being on a work program at the university, and trying for all the debts and scholarships you can. Do all you can to avoid debt.