Sir Sanford Flemming in Lindsay Ontario is the local college that provides training. I believe their's is a 2 year program. They have a career day every winter which private companies & municipalities are invited, to watch the students climb & then meet & talk to the students after. Many students that demonstrate good climbing skills are offered jobs on the spot.
Unfortunately, the forestry program is in threat of being eliminated, and companies are upset as this is a primary source for new climbers. There is a big push in the industry in Southern Ontario to try to save the program.