How do US high schools consider developmental appropriateness in their operation?

Hey everyone, I've been puzzled with how most high schools in the United States carry out their educational process keeping students' development in mind. Can you guys enlighten me on how the school system operates considering the developmental stages of high schoolers?

Developmentally appropriate practices are a critical aspect of the U.S. educational system, including high schools. Typically, these practices are evident in several major components of a student's educational experience.

Firstly, the customization of curriculum content for different ages and grades is comprehensive in U.S high schools. The subjects offered and topic difficulty in a curriculum are designed to match students' intellectual abilities at different age groups.

For instance, students may begin with recalling information and understanding concepts in younger grades, and as they progress, are expected to employ critical thinking and problem-solving skills. A sophomore studying algebra, for example, will encounter complex concepts that an eighth-grader would not.

Secondly, educators ensure developmentally-appropriate interactions by creating a conducive learning environment that fosters growth - academically, emotionally, and socially. Teachers are trained to employ different strategies for different age groups. For instance, they may use more discussion-based learning for older students while incorporating more hands-on activities for younger ones.

School services play a significant role in supporting students' development. Guidance counsellors, for example, help students make informed decisions about college applications and career pathways, which is especially pertinent for students navigating through the transitional stage from adolescence to adulthood.

Finally, high schools also focus on extracurricular activities as they provide an excellent way to foster students' non-academic skills such as leadership, teamwork, and creativity. These programs usually vary in depth and intensity, enabling students to explore and find their passions throughout high school.

It's worth noting that the extent of developmental appropriateness can vary from one high school to another, based on various factors like resources, student population, etc. This concept can also grow and shift as educational understandings and standards evolve over time.