RD American School is an American school of distinction in Singapore and a partner school of New York’s Riverdale Country School. RDAS enrolls students in Grades 1 through 8 and places each child by age on September 1. High School, Grades 9 through 12, opens in August 2027. The chart on this page covers the full American grade system, Kindergarten through Grade 12, as a reference for every age.
Enter a date of birth to see the matching grade.
Find your child’s date of birth in the column for the school year of entry. Ages are counted on September 1 of that year.
| Grade | Age on September 1 | Date of birth for 2026–2027 entry | Date of birth for 2027–2028 entry |
|---|---|---|---|
| KindergartenFor reference. RDAS enrollment begins in Grade 1. | |||
| Kindergarten | 5 years | Sep 2, 2020 – Sep 1, 2021 | Sep 2, 2021 – Sep 1, 2022 |
| Elementary SchoolGrades 1 to 5 | |||
| Grade 1 | 6 years | Sep 2, 2019 – Sep 1, 2020 | Sep 2, 2020 – Sep 1, 2021 |
| Grade 2 | 7 years | Sep 2, 2018 – Sep 1, 2019 | Sep 2, 2019 – Sep 1, 2020 |
| Grade 3 | 8 years | Sep 2, 2017 – Sep 1, 2018 | Sep 2, 2018 – Sep 1, 2019 |
| Grade 4 | 9 years | Sep 2, 2016 – Sep 1, 2017 | Sep 2, 2017 – Sep 1, 2018 |
| Grade 5 | 10 years | Sep 2, 2015 – Sep 1, 2016 | Sep 2, 2016 – Sep 1, 2017 |
| Middle SchoolGrades 6 to 8 | |||
| Grade 6 | 11 years | Sep 2, 2014 – Sep 1, 2015 | Sep 2, 2015 – Sep 1, 2016 |
| Grade 7 | 12 years | Sep 2, 2013 – Sep 1, 2014 | Sep 2, 2014 – Sep 1, 2015 |
| Grade 8 | 13 years | Sep 2, 2012 – Sep 1, 2013 | Sep 2, 2013 – Sep 1, 2014 |
| High SchoolGrades 9 to 12, opening August 2027 | |||
| Grade 9 | 14 years | Sep 2, 2011 – Sep 1, 2012 | Sep 2, 2012 – Sep 1, 2013 |
| Grade 10 | 15 years | Sep 2, 2010 – Sep 1, 2011 | Sep 2, 2011 – Sep 1, 2012 |
| Grade 11 | 16 years | Sep 2, 2009 – Sep 1, 2010 | Sep 2, 2010 – Sep 1, 2011 |
| Grade 12 | 17 years | Sep 2, 2008 – Sep 1, 2009 | Sep 2, 2009 – Sep 1, 2010 |
The cutoff is September 1 itself. A child whose birthday falls on or before September 1 joins the older class, and a child born on September 2 or later joins the younger one. For example, a child who turns 7 on September 15, 2026, is 6 on September 1. That child is age-eligible for Grade 1 in 2026–2027 and for Grade 2 in 2027–2028.
Grade 2, when the child is 7 on September 1. An 8-year-old is in Grade 3, and a 10-year-old is in Grade 5, the final year of Elementary School. Middle School runs from Grade 6 at age 11 to Grade 8 at age 13, and High School from Grade 9 at age 14 to Grade 12 at age 17.
RDAS uses American grades: a child who is 7 at the start of the school year is in Grade 2. Schools that number by Year, such as British-curriculum schools, call the same age group Year 3. Whatever the previous school called the grade, placement at RDAS follows age and school records.
Yes. RDAS accepts applications year-round, and many grade levels take new students mid-year when places are available. Grade placement still follows the child’s age on September 1 of that school year.
