KATIE HOLMES enrolls SURI at Roman Catholic all-girls school Convent of the Sacred Heart, located on New York's Upper East Side.

Here's the 411 on CSH:

Among them the alumini: Lady GagaNicky Hilton and Anderson Cooper's mother, Gloria Vanderbilt,

The school, which teaches pre-kindergarten through high school, is divided up into three tiers — Lower School, Middle School and Upper School — to accommodate the 690 girls who attend.

It costs $39,265 per year to attend the high-functioning institution, which is one of the area's most acclaimed, buoyed by a generous 7:1 ratio of students to teachers.

The school issues iPads to all eighth graders and SMARTboards and Apple TVs. There are two gyms, three science labs, a darkroom studio, rooftop playground and a state-of-the art athletic and wellness center, reported.

Students are required to attend Mass every Thursday and the curriculum is known to be very strict.

Languages are a strong focus at the school with both French and Spanish being taught from kindergarten, Latin being introduced at grade seven and in upper school options are offered such as Arabic, Greek or Mandarin.

And, Suri, the little fashionista will have no choice but to dress exactly as all the other students, in a uniform of short-sleeved white blouse with a red trim and a Peter Pan collar, button down jumper and red pinafore.