With the price of private-school education easily running to the tens of thousands of dollars each year, it's no wonder many families will only look at properties that fall within a coveted school district. Public School 321 in Park Slope is one institution that inspires such fervid real-estate loyalty, and it's probably a big reason the Brooklyn neighborhood is so overrun with kids. It can't hurt that its leafy streets are lined with handsome brownstones and gracious co-ops — and, increasingly, modern condos — that offer plenty of space for a little bit less than what you'll pay in Manhattan. Alas, they used to cost a lot less. —S. Jhoanna Robledo

One-Bedroom

198 Seventh Ave., at 2nd St., Apt. 2F
Sunday, 2 p.m.–4 p.m.
$335,000

90 Eighth Ave., nr. President St., Apt. 10E
Sunday, 2:30 p.m.–4 p.m.
$549,000

415 4th St., nr. Seventh Ave., Apt. 1
Sunday, 1 p.m.–3 p.m.
$1.325 million

Two-Bedroom

486 3rd St., nr. Seventh Ave., Apt. 4
Sunday, 1 p.m.–3 p.m.
$899,000

719 Carroll St., nr. Seventh Ave., Apt. 2L
Sunday, noon–2 p.m.
$659,000

678 Carroll St., nr Sixth Ave., Apt. 3
Sunday, 2:30 p.m.–4:30 p.m.
$735,000

Townhouse

292 Sixth Ave., nr. 2nd St.
$1.85 million
Sunday, noon–2 p.m.

328 5th St. nr. Fifth Ave.
$1.4 million
Sunday, 1 p.m.–3 p.m.