Halle Berry -- Aggressive Photog May Be Her Ticket To Paris

The aggressive paparazzo who incited Halle Berry at her daughter's school is going to be called to the witness stand and grilled like a cheeseburger ... in Halle's bid to move her family to Paris.

Halle is getting ready to fight it out with baby daddy Gabriel Aubry in family court. She is asking the judge to allow her to move to Paris, where she claims the paparazzi respect the privacy of celebrities and their families much more than in the U.S.

Sources tell TMZ ... her lawyer will call independent photog Andrew Deetz to the stand -- he's the photog who was lurking around Nahla's school, causing Halle to explode in anger. We're told Halle's lawyer, Stephen Kolodny, will use Deetz as a human exhibit -- getting him to expose his no-holds-barred tactics of shooting the children of celebs.

BTW, Deetz got into a big scuffle with Britney Spears' bodyguards in Las Vegas back in 2007. He claimed one of her hired muscle punched him during the skirmish.

In addition to Deetz, we're told Kolodny will call expert witnesses who live in France, to explain how French culture differs from the U.S., and how photogs generally keep their distance from celebs and their families. The lawyers will also testify that privacy laws protect celebs in France way more than in the U.S. Of course, Gabriel will counter with Princess Diana.

As for 4-year-old Nahla, we're told she will NOT testify about the proposed move.

Sources tell us there is NO chance of settlement -- this case WILL go to trial.

The trial is scheduled for June.