Officer Robert Martinez is currently assigned to Dorie Miller Intermediate. He graduated from Lancaster High School and earned an Associate’s Degree in Criminal Justice from Navarro College. He also completed the Navarro College Police Academy and obtained a Bachelor's Degree in Criminal Justice from Texas A&M Commerce.

Officer Martinez began his law enforcement career in 2018 with the Ennis ISD Police Department. He holds an Advanced Peace Officer License and a School-Based Law Enforcement Officer certificate, both issued by the Texas Commission on Law Enforcement. Additionally, Officer Martinez is certified as a trainer in the Standard Response Protocol and as an ALERRT Level 1 instructor (Advanced Law Enforcement Rapid Response Training).