I have received an unusual number of questions about division placement or requests to be moved to a different division.
At the end of each season, divisions are looked at and adjusted to attempt to provide a balanced number of drivers between divisions and to get individual drivers placed into the division where they "fit" the best.
Once the number of divisions is set, the number of drivers is set. Once that is done, the process becomes blind and only looks at what a driver has done on the track. If data looks especially strange then I have been known to check the name associated with the strange data and watch some of their races. An example of this was a driver, who will not be named, had decided that he didn't want to be in the division he was assigned to. He was solid mid-pack for a couple of months and had asked to be moved down so he could win more races. (his words, no my assumption) One month, he ran in the bottom two spots in every race for the month (this happened to be a month when half of the lower division moved up to him). Imagine his shock and dismay when he didn't get moved.