“The team is warm and friendly. They know every child by name and create a truly supportive environment.”
—ISJ Parent
Age & Year-Level Equivalents
Age on 1 September (ISJ/UK benchmark) with typical equivalents in the USA and Indonesia*
| Age on 1 Sept | ISJ / UK | USA (typical) | Indonesia (national) |
|---|---|---|---|
| 2 | Pre-Nursery | Early Childhood / Toddler | Playgroup (Kelompok Bermain) |
| 3 | Nursery | Preschool (Pre-K 3) | Playgroup (KB) |
| 4 | Reception | Pre-K (4) | TK A |
| 5 | Year 1 | Kindergarten | TK B |
| 6 | Year 2 | Grade 1 | SD Kelas 1 |
| 7 | Year 3 | Grade 2 | SD Kelas 2 |
| 8 | Year 4 | Grade 3 | SD Kelas 3 |
| 9 | Year 5 | Grade 4 | SD Kelas 4 |
| 10 | Year 6 | Grade 5 | SD Kelas 5 |
| 11 | Year 7 | Grade 6 | SD Kelas 6 |
| 12 | Year 8 | Grade 7 | SMP Kelas 7 |
Age 2
ISJ / UK
Pre-Nursery
USA
Early Childhood / Toddler
Indonesia
Playgroup (KB)
Age 3
ISJ / UK
Nursery
USA
Preschool (Pre-K 3)
Indonesia
Playgroup (KB)
Age 4
ISJ / UK
Reception
USA
Pre-K (4)
Indonesia
TK A
Age 5
ISJ / UK
Year 1
USA
Kindergarten
Indonesia
TK B
Age 6
ISJ / UK
Year 2
USA
Grade 1
Indonesia
SD Kelas 1
Age 7
ISJ / UK
Year 3
USA
Grade 2
Indonesia
SD Kelas 2
Age 8
ISJ / UK
Year 4
USA
Grade 3
Indonesia
SD Kelas 3
Age 9
ISJ / UK
Year 5
USA
Grade 4
Indonesia
SD Kelas 4
Age 10
ISJ / UK
Year 6
USA
Grade 5
Indonesia
SD Kelas 5
Age 11
ISJ / UK
Year 7
USA
Grade 6
Indonesia
SD Kelas 6
Age 12
ISJ / UK
Year 8
USA
Grade 7
Indonesia
SMP Kelas 7
*Names and cut-off dates vary by system and state. ISJ follows a 1 September age reference. Indonesia: PAUD includes Playgroup/KB and TK (A/B); SD covers Kelas 1–6; SMP covers Kelas 7–9. This guide is for parent reference.