This phrase most likely refers to the infamous (original Spanish title), also known in English as Slaves in Uniform or Women in Uniform . It's a Mexican erotic drama directed by Luis María Delgado , starring Gloria Guida and Jorge Rivero .
The film is set in a stark, oppressive all-girls boarding school—a classic trope of exploitation cinema, from The Belles of St. Trinian's to León Klimovsky's Spanish horrors. But here, the "garces" (bitches) are not just the students. They are the cruel headmistress, the sadistic nuns, and the rebellious young women trapped within. The plot, such as it is, follows a new, innocent student who falls prey to the school’s brutal discipline. Her response is not passive victimhood but a calculated, vengeful seduction of the men in power (a handsome doctor, a visiting engineer), turning the institution's own weapon—sexuality—against it. garces en uniforme 1988
It seems you're looking for a good text (likely a description, analysis, or narrative) related to — which translates from Spanish/French as "bitches in uniform 1988." This phrase most likely refers to the infamous