* Expectation based on societal pressure/aspirations: In many developed countries, particularly the US, there's significant societal pressure for high school graduates to pursue higher education. This creates a cultural expectation, even if it's not explicitly stated. However, this doesn't translate directly into a quantifiable number.
* Expectation based on projections/trends: We can look at historical trends in college enrollment rates. These rates vary significantly by country and socioeconomic factors. While there's a general trend towards increasing higher education enrollment globally, projections vary widely depending on factors like economic conditions and government policies. No single reliable projection exists for the entire global population.
* Expectation based on individual circumstances: Ultimately, the expectation for *individual* students varies greatly based on factors like family income, academic performance, access to resources, career goals, and personal aspirations. Some families strongly encourage college, while others may prioritize vocational training or immediate employment.
Therefore, instead of a specific number, it's more accurate to say that the percentage of high school graduates pursuing higher education varies greatly depending on the country and the specific demographic being considered. You would need to specify a country or region to find more precise statistics on college enrollment rates.