San Angelo ISD Announces Additional New Principal and Leadership for the 2024-2025 School Year

Dr. Marissa Contreras Guerrero is the new principal of Bradford Elementary, replacing Berta Sepulveda. Dr. Guerrero most recently served as associate principal at Lincoln Middle School for the past five years. She has been in education for 30 years, all with San Angelo ISD. Dr. Guerrero started her journey with San Angelo ISD as a bus driver and after completing college she served as a secondary mathematics teacher. She also served as a mathematics department head, instructional coach, at-risk coordinator and assistant principal. Dr. Guerrero holds a Bachelor of Arts in Spanish and Mathematics and a Master of Arts in Curriculum and Instruction and School Administration from Angelo State University. She also holds a Ph.D. in Curriculum and Instruction and School Administration from Texas Tech University. 

Christy Diego is SAISD’s new director of human resources, replacing LaTonia Sutton who will be serving as principal of Lone Star Middle School. She most recently served as director of emergent bilingual and has previously served as a Spanish teacher, high school at-risk coordinator, middle school assistant principal, elementary principal and middle school principal. Mrs. Diego has been in education for a total of 21 years, 20 with SAISD. She holds a Bachelor of Science in Interdisciplinary Studies from Angelo State University and a Master of Education from Sul Ross University.

Berta Sepulveda is SAISD’s new director of emergent bilingual, replacing Christy Diego. Ms. Sepulveda most recently served as principal of Bradford Elementary and has previously served as assistant principal, instructional coach and teacher. Ms. Sepulveda has been in education for 22 years, all at San Angelo ISD. She holds a Bachelor of Science in Interdisciplinary Studies and a Master of Education in School Administration, both from Angelo State University.