If a teacher’s nose ring causes a substantial disruption to the learning environment, it won’t be allowed in Henrico County schools next year. Otherwise, it’s OK under the professional-attire expectations approved last night by the Henrico School Board. A draft of the employee dress code had banned “distracting” facial, lip and tongue jewelry. Looking for a better description of what’s not allowed, School Board members consulted with staff attorney Melissa K. Velazquez, who suggested “substantial disruption” as a phrase that’s been upheld in court cases.