Tom Felton taking a year off?

[Regina]

In the issue of Nickelodeon Magazine:

Do you think acting will be your career?

"No, I don't.  My plan is to continue acting until I'm sixteen, then 
travel for a year, fishing with my brother." 

 He goes on to say he wants to go to fishery management college.  
Isn't Tom 15?  Aren't the movies being made back to back?  Jason 
Isaacs has said he will have more lines in movie 4 and also the 
screenplay is being written.  How could Tom take off a year?  And 
what is a "fishery"? 

Gina