Having recently moved to Spain, I’ve been spending a lot of time researching schooling options for my child, particularly private schools. After looking around, I found that there’s a lot of confusing and conflicting information about the right age to start school and the mandatory school age. Today, I’m sharing what I’ve learned from my research and consultations, hoping to help other parents who are in the same boat.
The Spanish School System and Age Brackets
First, it’s important to understand that the Spanish education system is structured differently from many other countries. The preschool and primary stages are divided as follows:
- Educación Infantil (Early Childhood Education): This stage is split into two cycles. The first cycle is for ages 0-3, often called Guardería (nursery or daycare). The second cycle is for ages 3-6, which is what we typically consider ‘preschool’ or ‘kindergarten’.
- Educación Primaria (Primary Education): This starts at age 6 and continues until age 12. It marks the beginning of compulsory education.
So, the most crucial point is this: compulsory education in Spain begins at age 6. The Infantil stage before age 6 is not technically mandatory, but almost all Spanish families enroll their children. It’s considered vital for helping kids integrate, learn the language, and develop social skills.

At What Age Can You Apply to Private Schools?
So, when it comes to applying to Spanish private schools, at what age can you start the process? The answer is: Anytime
! However, the actual enrollment depends on the child’s age.
For Spanish private schools
, the rules are relatively flexible, but they generally follow the framework set by the Ministry of Education. A child’s grade level is determined by their calendar year of birth. This means admission is based on whether the child reaches the required age by December 31st of the enrollment year. For example, to enroll in the 3-year-old Infantil class (P3) in 2024, a child must have been born between January 1st and December 31st, 2021. Even a child born at the end of December will be in the same grade as one born in January. This can be a slight disadvantage for the youngest children in the group, so parents should be prepared for that.
| Enrollment Year | Grade Level | Birth Year | Age |
| 2024 | Infantil P3 | 2021 | Turns 3 |
| 2024 | Infantil P4 | 2020 | Turns 4 |
| 2024 | Infantil P5 | 2019 | Turns 5 |
| 2024 | Primaria 1º | 2018 | Turns 6 |
Many top private schools have very limited spots, especially in the entry-level grades. Some families get on the waiting list as soon as their child is born, or even before! My advice is, if you have a preferred school in mind, contact their admissions office as early as possible. Ask about their application process and open day schedules. Don’t wait until your child is nearly 3 years old to start thinking about it—by then, it might be too late!