School Readiness Calculator

The cut-off date is the date by which a child must turn 5 (or the required age) to be eligible to start kindergarten that school year. September 1st is the most common cut-off in the United States, but it varies by state and district — some use August 1st, October 1st, or December 31st. Always confirm with your local school district.

If your child starts kindergarten in a given year, they will typically complete 13 years of schooling (K through 12th grade) and graduate high school approximately 13 years after their kindergarten entry year. Our calculator estimates this graduation year automatically based on your inputs.

Academic redshirting means intentionally holding a child back from kindergarten for one year so they enter as one of the oldest in their class. Some parents do this for children with late birthdays or those who seem less socially or developmentally ready. Research on long-term benefits is mixed — consult your pediatrician and preschool teacher for personalized guidance.

The calculator estimates the number of days from today until the first day of school in your child's estimated entry year. This is calculated assuming school typically starts in early September of the entry year. For exact dates, check your local school district's academic calendar.

For premature babies, pediatricians recommend using an 'adjusted age' (corrected for weeks of prematurity) when assessing developmental milestones, especially in the first two years. For school enrollment purposes, most districts use the child's actual birth date, but you should discuss developmental readiness with your child's pediatrician if they were born significantly early.

Children with birthdays just before the cut-off date (sometimes called 'young fives') will be among the youngest in their kindergarten class. Some research suggests younger children in a class may face minor academic and social challenges early on. However, many young-for-grade children thrive. Consulting your preschool teacher and pediatrician can help you decide whether to enroll or redshirt.

Yes. In the United States, children typically must turn 5 by the cut-off date to start kindergarten. In the United Kingdom, children start school (Reception year) in the September after they turn 4. In Australia, starting age varies by state — generally 4.5 to 5 years. Canada also varies by province, typically age 5. This calculator defaults to US standards but allows you to adjust the required age.

Beyond age, school readiness includes social-emotional skills (playing with others, following instructions), language skills (speaking in sentences, knowing their name and address), basic cognitive skills (recognizing letters and numbers, simple counting), and self-care abilities (using the restroom independently, managing a backpack). Your child's preschool teacher or pediatrician can help assess developmental readiness.