* Constitutional interpretation differs: A right may be constitutionally guaranteed but its practical implementation may be weak or inconsistently applied.
* Constantly evolving legal landscapes: Constitutions and laws change.
* Definitions vary: The scope of "right to education" can be broadly defined (access to all levels) or narrowly (only primary education).
However, many countries explicitly include a right to education within their constitutions or other foundational legal documents. These include, but are not limited to:
* Most countries in the Americas: Many constitutions in Latin America and North America explicitly guarantee a right to education, often specifying free access to primary and sometimes secondary education.
* Many countries in Europe: Similar to the Americas, numerous European countries have enshrined the right to education, often incorporating international human rights standards.
* Many countries in Africa: Many African countries include the right to education in their constitutions, often reflecting the influence of international human rights instruments.
* Countries in Asia and Oceania: Several countries in these regions also include a right to education in their constitutions, though the extent of implementation and enforcement varies greatly.
To find specific examples, one would need to research the constitution and relevant legislation of each individual country. The UN's website, along with resources from human rights organizations, are useful starting points for this research. Simply searching "[Country name] constitution right to education" will yield relevant results. Keep in mind that the presence of a right in a constitution doesn't guarantee its effective implementation.