Create a vibrant and whimsical cartoon illustration using digital art of a schoolboy alien. The character should have an endearing and friendly appearance, wearing a school uniform or casual clothing with alien-inspired elements. Imagine a playful and curious expression on the alien's face, with large, expressive eyes and maybe some unique features like antennae or unconventional ears. The background should depict a school setting, such as a classroom or schoolyard, blending earthly elements with a touch of intergalactic charm. Use bright colors and a lively style to convey a sense of fun and friendliness. Feel free to add school-related accessories like a backpack, books, or a pencil, giving the character a relatable touch. The overall illustration should evoke a cheerful and imaginative atmosphere.