Do you plan to be a groomer forever, or at least 10+ years? If not, stay in school and get your diploma. Seriously. Dropping out will put you at a huge disadvantage later in life if you want to get a career in something that requires more of an education, and a higher salary. Not that grooming won't be a good job (I have no clue about this...), but I'd say at least get your diploma.

Not sure about Canada, but here in the US, you won't get much of anywhere without the minimum of your high school diploma, not to mention an associate's degree. Quitting school is never the answer.