Department of Defense Education Activity

Mr. Neils Mateo - Antilles HS Principal

Mr. Neils Mateo

Antilles HS Principal

Phone: 787-707-2301
1062 Victory Drive
Fort Buchanan , PR 00934
Puerto Rico

Ms. Yamaris Sierra - Antilles HS Assistant Principal

Mrs. Yamaris Sierra was born in San Juan, Puerto Rico and graduated from Universidad Metropolitana of Puerto Rico with a bachelor's degree in Psychology. Ms. Sierra began her career in the Health & Care industry, where she earnestly worked for 10 years. After marrying her husband, a former active-duty soldier, Mrs. Sierra obtained her first job with DoDEA as an Office Automation Assistant in the Special Education Department, at Vicenza Elementary School. This overseas experience introduced her to the educational field, which she fell in love with. While in Italy, she also established and managed her own child daycare center, which was shadowed by the Child, Youth and School Services.

After returning to the United States, Mrs. Sierra worked as a Medical Coder at the Carl R. Darnall Hospital at Fort Hood, Texas. It was while at Ft. Hood, that Mrs. Sierra realized how much she missed being in a school environment. She soon enrolled in the Texas Region 12 Alternative Certification Program, where she graduated with an Early Childhood to 6th grade Teacher Certification.

She obtained her very first teaching position as a 3rd grade Bilingual/Dual Language Teacher at Hector P. Garcia Elementary School, in Temple, Texas.  She was named the 2015 Rookie of the Year, which is awarded to beginning teachers who demonstrate educational skills and expertise that make them stand out from the rest.

Mrs. Sierra also worked at Temple High School as a Secondary Spanish Teacher. She challenged her students and herself by preparing her 9th grade native Spanish speakers to take the Spanish AP test. Ms. Sierra considers herself a lifelong learner. She graduated from Louisiana College, with a masters in arts of Education and completed graduate coursework in Educational Administration and Supervision. Also, she added teaching certifications to her curricula: Language Immersion,Social Studies, AVID, English as a Second Language, Advanced Placement Spanish Language and Culture and Spanish Advanced Placement Literature

In 2017, after Hurricane Maria, Mrs. Sierra accepted a Secondary Spanish teaching position at Antilles Middle School in Ft. Buchanan, Puerto Rico. She was well-known for her active involvement in extracurricular activities, tech savviness, team collaboration and disposition. Following her heart, to teach high schoolers again, Mrs. Sierra transferred to Antilles High School in 2019.

Mrs. Sierra is very excited about this new opportunity at Antilles High School and is welcoming students, parents and staff to partnership with her to fulfill DoDEA's mission.

Ms. Yamaris Sierra

Antilles HS Assistant Principal

Phone: 787-707-2301
1062 Victory Drive
Fort Buchanan , PR 00934