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education2026-08-084 min read
How to Calculate Age for School Admission (Cut-Off Dates)
Schools use an age cut-off as of March 31 or June 1. Learn to compute your child's exact age and avoid admission rejection.
School admission forms reject more children for age than for marks. The reason is the cut-off date, and most parents calculate it wrong because they count from the birth date to today instead of to the school's fixed reference.
Why the cut-off date matters A school may require a child to be 4 years old by March 31, 2026 for Grade 1. A child born on April 5, 2022 is three years and eleven months on that date, so they miss the cut by one month, even though they turn four weeks later. The rule is about the reference date, not the application date.
How to compute exact age Age = difference between the cut-off date and the birth date, counted in years and completed months. If the birth date is after the cut-off, the child is one year younger for admission purposes, regardless of how close the birthday is.
Common state rules in India - Many state boards use March 31 as the reference. - Some CBSE and international schools use June 1 or September 30. - The National Education Policy suggests a flexible 3 to 6 age band for the foundational stage.
Always read the specific school's notification rather than assuming, because two schools in the same city can differ.