As the length of compulsory education differs from country to country, so does the age when children begin school – though it's usually between 5 and 6 years old.
Kohustusliku hariduse omandamise aeg erineb riigiti; samuti erineb see, mis eas lapsed kooli lähevad. Tavaliselt toimub see 5- või 6-aastaselt.