Please do us a favor: don't go to a flight school where training and the checkride is done in "cooperation" .. Remember as a CFI you will have the responsibility of training pilots; this should not be taken so lightly.. I hate people going to "10 day get your CFI/II/MEI" courses. The people that come from that kind of a back ground make really bad CFIs..
Take a lot of time.. Study (the skill that lacks in most of the gen X pilots these days) and study and study more.. Be proud of yourself because you increased the pass rate from 60 % to 65% at your local FSDO..