depends.....

whatever you pick you have to give it time to have an impact....but not hold on so long that it becomes outdated

a 9 year cycle for a current events curriculum would certainly be crazy, for algebra, not so much

MN revised standard every 9 years, so we wanted to align with that schedule. As we found out, it's all about the process.

...and a tough process it is!!! Sometimes the devil gets into the details (I heard that somewhere!)!