Not very bright at all. The process of becoming blinded by light is because the iris contracts when the light level increases. The reverse process of dilation is slow for humans, so the return to darkness leaves your eye with insufficient light coming in to see in the environment you suggest. This isn't a binary factor.
The VA calculates the rate of pursuit by dividing the number of credit hours being pursued by the number of credits considered to be full-time for the term. As as example, if the term is 10 to 13 weeks in length, 12 credits is considered full time. If the term is 8 weeks in length, 8 credits is considered full time.
3 credits-many social science and humanities courses. 4 credits-most math and science classes (to account for labs). 5 credits-some language classes that require a large amount of time in class. Most colleges require that you take at least 12 credits per semester to be considered a full time student. That could be either three or four courses.