It’s the most anxiety-inducing season of all: Kindergarten placement letters are out in New York City.

All kindergartners are guaranteed a spot in a city school, and almost all families that prefer their zoned school ultimately get to enroll there.

But the city’s admissions process yields waitlists at dozens of schools for a period of time every year — and this year, there are 50 schools where not all local families who applied by the January deadline could be given a spot. In all, 590 applicants were placed on waitlists, compared to 1,083 a year ago, according to the city’s admissions tally.

Here are the New York City schools with kindergarten waitlists right now:

Waitlists typically clear over the spring and summer, as families opt for schools outside of their zone, including private or charter schools, or relocate out of the city. But each year, some kindergartners are assigned to schools outside of their zone — an issue that typically affects a few crowded neighborhoods in Queens and Brooklyn.

Half of the schools with waitlists had five or fewer children on them. Three schools had waitlists with more than 60 children: PS 196 and P.S. 78 in Queens and P.S. 160 in Brooklyn.

In a sign of just how volatile the admissions picture can be, just 23 of the 50 schools with waitlists this year also had them last year.

Some schools with large waitlists had none last year, according to a comparison of education department data from the two years. P.S. 78 in Queens has 73 children on the kindergarten waitlist this year, for example, but last year all zoned students who applied by the deadline were admitted right away.

On the other hand, some schools that placed many students on the waitlist last year were able to take all applicants this year. Last year, 43 children landed on the waitlist at P.S. 176 in Brooklyn, but this year, the school has no waitlist at all.