* Country: Compulsory education laws vary widely by country. Some countries mandate schooling until age 16, others until 18.
* State/Province (within a country): Even within a single country, different states or provinces might have different compulsory education ages.
* Type of school: Adult education programs, community colleges, and universities have no upper age limit. High schools generally have an upper age limit, but it's flexible and often depends on individual circumstances.
* Individual circumstances: Students with disabilities may have extended access to education beyond the typical age limits.
In short, while there are lower age limits for compulsory education, there are generally no upper age limits for continued education beyond the compulsory years, depending on the type of schooling and the institution.