go to court and plead nolo, it may get you off the hook with the points since you dont have anything in your driving record, and then the judge is going to tell you what the amount of the fine is going to be, and right after, he is going to ask you if you wanna say something, just say yes and pop the magic question "may i ask for a reduction on the fine?", if he grants it, thats a 25% off the fine.
ive heard this about 3 years ago when i had to show up to court due to a ticket that got dismissed.
and then tried 6 months ago in gwinnett for a speeding ticket (67/35mph= 6 points) and worked!!! i pled nolo, so no points, and got the fine reduced from 165 to 125, thats 25% off.

i know that a speeding ticket is not the same offence as passing a school bus, but give it a shot.