represent more than 45 countries of origin and approximately 35 languages are spoken. School uniforms Sharpstown International School has a mandatory school uniform policy. The middle schoolers have to wear red and the high schoolers have to wear navy blue. Only the seniors get to wear black. References External links Sharpstown International School Sharpstown International School (Archive) Houston Independent School District middle schools Houston Independent School District high schools Public high schools in Houston Public middle schools in Houston Magnet schools in Houston