Hey, Schoolgirl by Simon and Garfunkel is a playful and nostalgic song that captures the youthful exuberance and innocence of teenage love. The song revolves around the excitement and simplicity of schoolyard romance, addressing the object of the singer's affection with a sense of lightheartedness and joy. Key themes in this song include young love, the sweetness of first crushes, and the carefree nature of teenage life. The catchy melody and upbeat rhythm underscore the happy, carefree vibe that comes with young love, making it an anthem for youthful romance.