Transitional kindergarten · San Ysidro

4 of San Ysidro’s public and charter campuses ran a TK class in 2025–26, enrolling 145 four-year-olds.

Source: CDE 2025–26 October enrollment count, 4 campuses in San Ysidro.

George Nicoloff Elementary: 52 in TKLa Mirada Elementary: 44 in TKSunset Elementary: 26 in TKWillow Elementary: 23 in TK
  1. George Nicoloff Elementary52 in TK
  2. La Mirada Elementary44 in TK
  3. Sunset Elementary26 in TK
  4. Willow Elementary23 in TK
Each numbered dot is a campus with a TK class, where it stands in the city. A larger dot has more children in TK. North is up.

Eligibility

Who can start TK in 2027–28?

Children who turn 4 by September 1, 2027 can start, and it’s free.

Age

Is my child old enough?

A birthday from September 2, 2022 through September 1, 2023 (our arithmetic from the rule). A child who turns 5 by September 1 starts kindergarten instead.

Rule: California Education Code § 48000 (opens in a new tab)

Cost

Does TK cost anything?

No. TK is a free public school year before kindergarten, and enrolling is optional. Hours, before- and after-school care and open seats vary by campus, so ask the school.

Starting ages and cutoff dates →

Where to enroll

Through 2 school districts

Campuses

Which San Ysidro campuses have a TK class?

4 campuses in San Ysidro had a TK class in 2025–26.

Campuses by TK headcount

  • 52in TK

    George Nicoloff Elementary

    Grades TK–6 · South Bay Union

    Scope Score 69Needs Support · 14th percentile

  • 44in TK

    La Mirada Elementary

    Grades TK–6 · San Ysidro Elementary

    Scope Score 71Needs Support · 24th percentile

  • 26in TK

    Sunset Elementary

    Grades TK–6 · San Ysidro Elementary

    Scope Score 74Developing · 40th percentile

  • 23in TK

    Willow Elementary

    Grades TK–6 · San Ysidro Elementary

    Scope Score 65Needs Support · 1st percentile

Each campus’s TK headcount is from the state’s 2025–26 October enrollment count. Each Scope Score and percentile compares a school’s elementary grades with California elementary schools. A campus without elementary results shows none.

Each headcount counts the students enrolled on one October day, so it shows who enrolled, not seats open now. A campus missing here may still run TK; confirm with the school or district.

Before TK

Too young for TK? Where can my child go?

San Ysidro has 29 licensed child care programs.

5

child care centers

24

family child care homes

A child born after September 1, 2023 isn’t old enough for TK in 2027–28. Until they are, look at San Ysidro’s centers and family child care homes, and ask each one about ages and openings.

Preschools in San YsidroPre-K vs TK vs preschool in California: a 2026 parent’s guide

Licensed programs from the California Community Care Licensing Division: child care centers as of August 13, 2026, family child care homes as of May 25, 2025. A license is not a quality rating or a current opening.