Really basic 2D games can be done without almost any math knowledge at all. The keyword is basic.

If you wish to program anything in 3D you will get hit with math the second you start. People may try and tell you differently but I'll be blunt, you need math and lots of it. Thankfully, there are many sites out there which will tutor your math needs and/or provide you with functionality which you can use and try to understand.

I aint sure how your high school systems work, but make sure you take Math A30, or at least the first level 30 math.