The 1970's were all about feathered hair and this school picture of a sophomore high school girl comes from 1976.
She has a side part with bangs that feather to the side. Lot of layers create the foundation for this retro style. A brush was used with a blow dryer to direct the strands into place. The bottom flows onto the shoulders. Make-up was very uncommon with teenage girls of this era. Maybe mascara and possibly blush was usually about it. This photo also gives some idea of the fashion at the time. The tee shirt has a white band and collar and the rest is a blue pin stripe. A simple beaded necklace on a chain is the only accessory.