| Trekkie90909 |
The 10th level ability reduces the DC for all Acrobatics checks to jump by 1/2. The High Jumper ability sets the jump DC to half normal.
I'm sure there will be table variation here so YMMV; my interpretation would be:
High jump DC is set to 1/2 baseline (provided by Acrobatics DC tables) by High Jumper. 10th level ki pool ability then reduces this DC by 1/2 (So basically you can jump a vertical distance equal to your acrobatics roll up to your movespeed).