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[Click Here for Phase 2C Supplementary Guide 2025]

ACS Junior Balloting History: Your 2025 Chances & Strategies

Posted on July 17, 2025July 17, 2025 by Editor

Here is a full-phase analysis (2021โ€“2024) of ACS (Junior) Primary One (P1) registration, covering Phases 1, 2A(1), 2A(2), 2B, 2C, and 2C(S) to help you understand trends and odds going into 2025.


๐ŸŽ“ ACS (Junior) P1 Registration Analysis (2021โ€“2024)

๐Ÿ“Š Overview Table

YearPhase 12A(1)2A(2)2B2C2C(S)Total Vacancies
202188971933330270
202278112–27530270
202376101–31620270
202475102–31630270

๐Ÿ“ Note: Phase 2A was consolidated from 2A(1) & 2A(2) into a single Phase 2A in 2022.


๐Ÿ” Phase-by-Phase Analysis


๐Ÿ“Œ Phase 1 โ€“ Sibling Priority

YearApplicantsPlaces Taken
20218888
20227878
20237676
20247575

Insights:

  • Consistently takes up ~75โ€“88 places annually.
  • Slight downward trend; reflects gradual reduction in sibling cases.
  • But still takes ~28% of the schoolโ€™s intake each year.

๐Ÿซ Phase 2A โ€“ Alumni, Affiliates, Staff

YearApplicantsPlaces TakenBalloting
202197 + 1997 + 19No
2022112112No
2023101101No
2024102102No

Insights:

  • No balloting needed in Phase 2A across all years.
  • Strong and stable alumni demand (~100 each year).
  • Takes ~37โ€“41% of the intake, showing heavy alumni affiliation strength.

๐Ÿค Phase 2B โ€“ Volunteers, Church, Clan Associations

YearVacanciesApplicantsOversubscribed?Balloting Requirement
20213354โœ… YesSC < 1km
20222757โœ… YesSC < 1km
20233152โœ… YesSC < 1km
20243150โœ… YesSC < 1km

Insights:

  • Always oversubscribed, every year since 2021.
  • Balloting for SC <1km is the norm, not the exception.
  • High consistent demand for limited slots (only ~30 places/year).
  • Odds are tough, even for SCs living nearby.

๐Ÿ“ Phase 2C โ€“ Open to All Singapore Citizens & PRs

YearVacanciesApplicantsOversubscribed?Balloting Requirement
20213351โœ… YesSC < 1km
20225369โœ… YesSC < 1km
20236279โœ… YesSC > 2km
20246376โœ… YesSC 1โ€“2km

Insights:

  • Always oversubscribed, with increasing competition year-on-year.
  • In 2023, even SCs beyond 2km needed balloting (very rare).
  • In 2024, balloting happened for SCs between 1โ€“2km.
  • Demand rising in this phaseโ€”despite being โ€œopenโ€, odds are low unless you live within 1km and are a Singapore Citizen.

๐Ÿšซ Phase 2C(S) โ€“ Supplementary Balloting

YearVacancyApplicantsOccurred?
202100โŒ No
202200โŒ No
20230–โŒ No
202400โŒ No

Insights:

  • No surplus places were available in 2C(S) in the past 4 years.
  • Every slot filled by Phase 2C โ€” no opportunities for this phase.
  • Not expected to be activated in 2025 either.

๐Ÿ“Œ Overall Vacancy Allocation Summary

YearPhase 12A2B2C2C(S)Total
20218811633330270
20227811227530270
20237610131620270
20247510231630270

Observation:

  • Phase 1 + 2A consistently take up ~65โ€“70% of places.
  • Leaves very limited availability for general public via Phases 2B and 2C.

๐Ÿ”ฎ 2025 Outlook

PhaseOdds Summary
Phase 1Safe if sibling enrolled. Places likely around 70โ€“80.
2ASafe for alumni. No balloting in last 4 years.
2BHigh risk. Balloting for SC <1km expected again.
2CVery high risk. Even SCs living 1โ€“2km away may ballot.
2C(S)No chance. Not opened since 2021.

๐Ÿง  Final Takeaways

  • ACS (Junior) is one of the most oversubscribed boys’ schools in Singapore.
  • Most secure entries are via Phase 1 and Phase 2A (sibling/alumni).
  • For everyone else:
    • Live within 1km or higher chance of rejection.
    • Even with priority, balloting odds are steep.
Category: 2025

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  • Phase 1 is for a child who has a sibling studying in the primary school.
  • Phase 2A is for children whose parents are alumni, school advisory committee members, or staff members of the school or MOE Kindergarten. 
  • Phase 2B is for children whose parents are parent volunteers, church/clan members, or active community leaders. 
  • Phase 2C is open to all children who haven't secured a spot in earlier phases,
  • Phase 2C Supplementary is for those unsuccessful in Phase 2C
  • Phase 1: July 1st to July 3rd 2025
  • Phase 2A: July 10th to July 11th 2025
  • Phase 2B: July 21st to July 22nd 2025
  • Phase 2C: July 29th to July 31st 2025
  • Phase 2C Supplementary: Aug 18th to 19th

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  • Failed Phase 2C? Hereโ€™s Your 2024 Phase 2C Supplementary Vacancies Guide
  • ACS Junior Balloting History: Your 2025 Chances & Strategies
  • P1 Registration Phase 2C results 2025, Balloting & Analysis
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