Compulsory Education Laws: The implementation of compulsory education laws in many countries made it mandatory for children to attend school up to a certain age, which typically included high school. These laws ensured that a larger proportion of the population had access to secondary education.
Expanding Opportunities: As economies industrialized and urbanization grew, there was a rising demand for skilled workers. A high school education became increasingly necessary for obtaining better-paying jobs and career opportunities, motivating more families to send their children to high school.
Socioeconomic Changes: Over time, there were improvements in overall living standards and a growing middle class. This allowed families to allocate more resources towards their children's education, enabling them to pursue higher levels of education, including high school.
Changing Cultural Attitudes: A shift in cultural attitudes occurred, placing greater emphasis on the importance of education for both personal and professional development. This led to increased parental aspirations for their children's educational attainment.
Educational Reforms: Education systems underwent reforms aimed at increasing access and quality of education. Many countries invested in expanding high school facilities, reducing class sizes, and improving the curriculum to accommodate a broader range of interests and abilities.
These factors collectively led to a significant increase in the number of children entering and completing high school, resulting in an overall rise in the educational attainment levels of societies around the world.