Science Department

The science of today is the technology of tomorrow.

Randy A. Laurence

Department Head



  • Conference: 1st and 5th Period
  • Room Number : 001
  • College/University: Texas A&M, Sul Ross University
  • Years attended: 9
  • Degree(s): B.S, Master in education
  • Certified to teach: Math and Science
  • Grade levels: 10-12
  • Years in EPISD : 21 years , C.C Winn: 21 Years , Total teaching: 21 years
  • Favorite part about job: The students

Rolando Cruz

  • Conference: 1st Period
  • Room Number: 206
  • College/University: I.T.E.S.M (Tec Monterrey)
  • Years attended: 4
  • Degree(s): Bachelor Science, Chemistry , Engineering Masters in Education
  • Certified in: Physical Science
  • Grade Levels: 9-12
  • Years in EPISD:14 years, C.C Winn:14 years, Total Teaching: 14 years
  • Favorite part of job: Involvement with students

Sonia Delgado

  • Conference: 4th Period
  • Room Number: 204
  • College/University: UTSA
  • Years Attended: 7
  • Degree(s): B.S Biology, M.S Education
  • Certified to Teach: Composite Science
  • Other Subject: Chemistry, Biology, Forensic Science
  • Grade Levels: 10-12
  • Years in EPISD: 7 years, C.C. Winn :7 years , Total years: 7 years
  • Favorite part of job: I love making a difference in students' lives.

Francisco Ramirez

  • Conference: 2nd Period
  • Room Number: 104
  • College/Universities: St. Mary's / University of Nebraska / Sul Ross
  • Years Attended: 10
  • Degee(s): B.A / BS / M.E.D / MS
  • Certified to teach: Biology
  • Other Subject: Life Science, Special ED (9-12)
  • Years in EPISD: 10 years, C.C Winn : 10 years , Total teaching :10 years
  • Favorite part of job: Working with students

Tonya Rosas

  • Conference: 4th Period
  • Room Number: 205
  • College/University: SWT-Texas University
  • Years attended: 5
  • Degee(s) :B.S Biology
  • Certified to teach: All Science
  • Years in EPISD: 1/2 year, C.C. Winn: 1/2 year , Total Years: 1/2 Year
  • Favorite part of job: The Students

Generoso Robles

  • Conference: 4th Period
  • Room Number: 305
  • College/University: J.A.N.L (Mexico)
  • Years attended: 5
  • Degree(s): Dentistry
  • Certified to teach: Science Composite
  • Grade Levels: 8-12
  • Years at EPISD: 10 years, C.C. Winn: 8 years, Total teaching: 11 years
  • Favorite part bout your job: Work directly with students

Cynthia Salinas

  • Conference: 4th Period
  • Room Number: 311
  • College/University: Texas A&M University
  • Years Attended: 4
  • Degree(s): Bachelors in Science - Entomology
  • Certified to teach: Science 8-12 composite
  • Other subjects: All science
  • Grade Levles: 8-12
  • Years in EPISD: 3 years, C.C Winn: 3 years , Total teaching: 3 years
  • Favorite part of job: Watching my kids grow-up and interact with them

Dalivov Alamillo

  • Conference: 3rd Period
  • Room Number: 309
  • College/University: UTSA
  • Years Attended: 6
  • Degree(s): Biology - Bachelor of science
  • Certified to teach: 6-12
  • Grade levels: 9/10
  • Years at EPISD: 17 years, C.C Winn: 4 years , Total teaching: 17
  • Favorite part about your job: The children

Gloria Martinez Perez

  • Conference: 2nd Period
  • Room Number: 202
  • College/University: St. Edwards University/ Sul Ross University
  • Years Attended: 4/2
  • Degree(s): BS in Biochemistry/ Masters in Education
  • Certified to teach: Physical Science 8-12
  • Other subjects: Chemistry
  • Grade levels: 10/11
  • Years at EPISD: 13years, C.C Winn: 13 years, Total teaching: 13 years
  • Favorite part about your job: Helping students understand the subject matter and encouraging them for a higher education

Sergio Esquivel

  • Conference: 5th Period
  • Room Number: 207
  • College/University: UT Austin
  • Years Attended: 4
  • Degree(s): BA Biology, Masters school leadership
  • Certified to teach: Science Composite 9-12
  • Grade levels: 9-12
  • Years at EPISD: 7 years, C.C Winn 7 years, : Total teaching: 7 years
  • Favorite part about your job: Encouraging young people to perform well in school and Persue a career

Azalea Duran

  • Conference: 5th Period
  • Room Number: 003
  • College/University: St. Mary's University
  • Years Attended: 4
  • Degree(s): B.A in Phychology and Biology
  • Certified to teach: Life Science
  • Other subjects: Biology and Anatomy
  • Grade levels: 8-12
  • Years at EPISD: 9 years , C.C Winn: 9 years , Total teaching: 9 years
  • Favorite part about your job: Getiting students interested in the human body and science

Gabriela Valdes

  • Conference: 3rd Period
  • Room Number: 002
  • College/University: Sul Ross State University
  • Years Attended: 4
  • Degree(s): B.A in Interdisciplinary studies
  • Certified to teach: Life Science (8-12) Kinder - Six grade Generalist
  • Grade levels: 8-12
  • Years at EPISD: 4 years, C.C Winn: 4 years , Total teaching: 4 years
  • Favorite part about your job: Seeing the students succeed in learning

Gustavo Varela

  • Conference: 5th Period
  • Room Number: 208
  • College/University: Texas A&hi University
  • Years Attended: 5
  • Degree(s): B.S Sea Educational
  • Certified to teach: Biology/ P.E
  • Grade levels: Secondary
  • Years at EPISD: 22 years, C.C Winn: 10 years, Total teaching: 28 years
  • Favorite part about your job: Interacting with students

Lutece Adams-Hesles

  • Conference: 3rd Period
  • Room Number: 004
  • College/University: Texas A&M University
  • Years Attended: 5
  • Degree(s): Chemistry major (Bachelor of arts in Chemistry) Master of educational in school counseling
  • Certified to teach: Chemistry and Biology
  • Grade levels: 10th
  • Years at EPISD: 5 years, C.C Winn: 5 years, Total teaching: 5 Years
  • Favorite part about your job: Interacting with the students of C.C Winn
10 Amazing Science Tricks Using Liquid!
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