Transitional kindergarten · Mountain House

6 of Mountain House’s public and charter campuses ran a TK class in 2025–26, enrolling 335 four-year-olds.

Source: CDE 2025–26 October enrollment count, 6 campuses in Mountain House.

Evelyn Costa Elementary: 80 in TKSebastian Questa Elementary: 62 in TKBethany Elementary: 60 in TKAltamont Elementary: 51 in TKWicklund Elementary: 42 in TKHansen Elementary: 40 in TK
  1. Evelyn Costa Elementary80 in TK
  2. Sebastian Questa Elementary62 in TK
  3. Bethany Elementary60 in TK
  4. Altamont Elementary51 in TK
  5. Wicklund Elementary42 in TK
  6. Hansen Elementary40 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 Lammersville Joint Unified

Campuses

Which Mountain House campuses have a TK class?

6 campuses in Mountain House had a TK class in 2025–26.

Campuses by TK headcount

  • 80in TK

    Evelyn Costa Elementary

    Grades TK–8 · Lammersville Joint Unified

    Scope Score 95Strong · 98th percentile

  • 62in TK

    Sebastian Questa Elementary

    Grades TK–8 · Lammersville Joint Unified

    Scope Score 86Strong · 88th percentile

  • 60in TK

    Bethany Elementary

    Grades TK–8 · Lammersville Joint Unified

    Scope Score 86Strong · 88th percentile

  • 51in TK

    Altamont Elementary

    Grades TK–8 · Lammersville Joint Unified

    Scope Score 86Strong · 88th percentile

  • 42in TK

    Wicklund Elementary

    Grades TK–8 · Lammersville Joint Unified

    Scope Score 84Strong · 84th percentile

  • 40in TK

    Hansen Elementary

    Grades TK–8 · Lammersville Joint Unified

    Scope Score 95Strong · 98th 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?

Mountain House has 29 licensed child care programs.

0

child care centers

29

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 Mountain House’s centers and family child care homes, and ask each one about ages and openings.

Preschools in Mountain HousePre-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.