* Gender: Boys are generally taller than girls at this age.
* Country/Region: Genetic factors influence average height, with variations across different populations.
* Ethnicity: Different ethnic groups may have different average heights.
* Nutrition: Access to proper nutrition significantly impacts growth.
You'd need to specify these factors to get a more precise average. However, you can expect a range. Generally, you'll find average heights for high school freshmen (around age 14-15) in the range of:
* Girls: Around 5'4" (163 cm) give or take a few inches.
* Boys: Around 5'6" (168 cm) give or take a few inches.
These are rough estimates, and individual heights will vary considerably. For a more specific average, you'd need to consult studies focusing on a particular population.