This is what I came up with...
Going with the rules in the United States a child has to five years old by September 1st to attend Kindergarten...
- Carey: born 10/1980
- Kindergarten: 1986-1987 school year (he barely missed the 1985-1986 deadline)
- Senior Year of High school: 1998-1999
- Drove the tour bus briefly in the summer of 1999
- Attended college autumn of 1999 to summer of 2000
- Joined the band/tour summer of 2000
- During Widow's Walk still 20, but my prediction almost 21
- Clu: born 1/1982
- Kindergarten: 1987-1988 school year
- Senior Year of High school: 1999-2000
- Went to college that autumn of 2000
Carey missing the 1985-1986 school year put only one year difference between the brothers in school and not the two year difference one would assume they had.