Transitional kindergarten · Castro Valley
7 of Castro Valley’s public and charter campuses ran a TK class in 2025–26, enrolling 333 four-year-olds.
Source: CDE 2025–26 October enrollment count, 7 campuses in Castro Valley.
- Independent Elementary71 in TK
- Castro Valley Elementary70 in TK
- Chabot Elementary47 in TK
- Vannoy Elementary46 in TK
- Marshall Elementary42 in TK
- Stanton Elementary40 in TK
- Palomares Elementary17 in TK
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.
Campuses
Which Castro Valley campuses have a TK class?
7 campuses in Castro Valley had a TK class in 2025–26.
Campuses by TK headcount
71in TK
Independent Elementary
Grades TK–5 · Castro Valley Unified
Scope Score 89Strong · 93rd percentile
70in TK
Castro Valley Elementary
Grades TK–5 · Castro Valley Unified
Scope Score 81Strong · 75th percentile
47in TK
Chabot Elementary
Grades TK–5 · Castro Valley Unified
Scope Score 87Strong · 90th percentile
46in TK
Vannoy Elementary
Grades TK–5 · Castro Valley Unified
Scope Score 85Strong · 85th percentile
42in TK
Marshall Elementary
Grades TK–5 · Castro Valley Unified
Scope Score 83Strong · 80th percentile
40in TK
Stanton Elementary
Grades TK–5 · Castro Valley Unified
Scope Score 80Solid · 70th percentile
17in TK
Palomares Elementary
Grades TK–5 · Castro Valley Unified
Scope Score 81Strong · 77th 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?
Castro Valley has 50 licensed child care programs.
21
child care centers29
family child care homesA child born after September 1, 2023 isn’t old enough for TK in 2027–28. Until they are, look at Castro Valley’s centers and family child care homes, and ask each one about ages and openings.
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.