Faculty & Staff
Meet our Faculty
Nancy Ribak Altadonna, M.S. Ed.
Education: Ms. Ribak Altadonna received her Bachelor of Science in Radio-TV-Film with a minor in history from The University of Texas at Austin. She earned a Master of Science in Education from Long Island University in Brooklyn, NY. Currently, she is working on a Ph.D. in Education with a specialization in Learning, Instruction, and Innovation at Walden University.
Experience: Ms. Ribak Altadonna teaches World History, World Geography, and Government in our Upper School.
Kristin Ashley, M.A.T.
Education: Miss Ashley received both her Bachelor of Arts Degree and Master of Arts in Teaching from Trinity University.
Experience: Ms. Ashley teaches a D Core class in our Lower School. Ms. Ashley also sponsors our EarlyAct Club.
Chris Borth, M.Ed.
Email: cborth@winston-sa.org
Education: Mr. Borth earned his Bachelor of Science in Secondary Education with an emphasis in Kinesiology from Texas State University and his Master of Education with an emphasis in Science Curriculum and Instruction from Concordia University.
Experience: Mr. Borth taught Math and Science at Winston for six years before taking the position of Athletic Director. Prior to coming to Winston, he worked as a teacher and coach for the Northside Independent School District, Lytle Independent School District, and St. James Catholic School. Coach Borth has nearly over 15 years of experience as a teacher and athletic coach.
Mike Canales, M.A.
Email: mcanales@winston-sa.org
Education: Mr. Canales received a Bachelor of Arts Degree from the University of Maryland and a Master of Arts Degree in Management from Webster University. His Texas Teaching Certificate is in the area of Special Education.
Experience: Mr. Canales has taught Spanish I, II, and III at Winston since 2004. Prior to coming to Winston, he worked for 10 years as a special education teacher in one of San Antonio’s largest public school districts.
Giovanni Cavatorta, M.B.A., M.S.
Email: gcavatorta@winston-sa.org
Education: Mr. Cavatorta received his Master of Science Degree in Computer Information Systems and a Master of Business Administration from St. Mary’s University.
Experience: Mr. Cavatorta has been at Winston since 2006 and teaches Upper School Math and Upper School Computer Programming.
Kali Dawson, M.A.T.
Experience: Miss Dawson teaches B core classes in our lower school. Prior to coming to Winston, she taught in both a traditional public school and a public charter school in San Antonio.
Niccole Heard, B.A.
Email: nheard@winston-sa.org
Education: Ms. Heard earned her Bachelor of Arts from The University of Texas at San Antonio. She is certified to teach through the Texas Institute for Teacher Education.
Experience: Ms. Heard teaches Middle and Upper School Math and Reading. Prior to coming to Winston, she worked for 8 years at St. George Episcopal in the after-school care department, and has served as a private tutor since 2008. She began her teaching career at Winston in 2016, when she served as a long-time sub and Director of the Extended Day program.
Tricia Hernandez, M.Ed.
Email: thernandez@winston-sa.org
Education: Mrs. Hernandez received her Bachelor of Science Degree in Health with an emphasis in Business and Industry from The University of Texas at San Antonio and her Master of Education in Exercise Science from Texas State University.
Experience: Mrs. Hernandez teaches Upper School Health and Speech classes. She also teaches Physical Education for the entire school. Prior to coming to Winston, she served as the head of the Physical Education Department at The Briarwood School, and was highly involved with the school’s Special Olympics program. Mrs. Hernandez also taught and coached in the Pleasanton Independent School District.
Jackie Jaramillo, M.A.
Email: jjaramillo@winston-sa.org
Education: Ms. Jaramillo received her Bachelor of Science Degree in Early Childhood Special Education with a minor in Guidance and Counseling from Southwest Texas State University and a Master of Education from Framingham College.
Experience: Ms. Jaramillo teaches Math, Reading, and Language Arts to our Lower School students, as well as Sixth Grade Social Studies. Ms. Jaramillo began her teaching career as one of Winston’s charter faculty members in 1985. In 1997, she took a sabbatical to work at the American School Foundation Monterrey and returned to Winston in 1999. Ms. Jaramillo has served as a School Attuned Certified Teacher and has specialized training in Alphabetic Phonics and the Landmark Writing Program.
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Kristal Kelley, B.A.
Email: kkelley@winston-sa.org
Education: Ms. Kelley received her Bachelor of Fine Arts degree in Elementary Education and Early Childhood Education from The University of Texas San Antonio.
Experience: Ms.Kelley began her teaching career in San Antonio in North East Independent School District. She was with the district for 8 years. She began subbing and teaching at The Winston School San Antonio Summer Program in 2016. She joined the lower school team in 2020.
Brenda Lane, M.Ed.
Email: blane@winston-sa.org
Education: Mrs. Lane received her Associate’s Degree in Early Childhood Development from the University of South Florida; a Bachelor of Science Degree (cum laude) in Interdisciplinary Studies from Southwest Texas State University; and a Master of Education specializing in Administration from Concordia Lutheran University.
Experience: Mrs. Lane teaches Middle School Social Studies. Prior to coming to Winston in 2000, Mrs. Lane taught in other private schools and served in the administration realm for more than 10 years.
Stacie Lewis, B.A.
Email: slewis@winston-sa.org
Education: Mrs. Lewis received her Bachelor of Arts Degree in Interdisciplinary Studies from The University of Texas at San Antonio. She is certified to teach ELA, ESL, and art.
Experience: Mrs. Lewis teaches Middle and Upper School Art. She has taught since 1998, and joined Winston after an extensive career in the Northside Independent School District. She is a lifelong artist with a passion for the visual arts and the English language.
Michelle McCay, B.A.
Email: mmccay@winston-sa.org
Education: Mrs. McCay received her Bachelor of Arts Degree in English from The University of Texas at San Antonio.
Experience: Mrs. McCay teaches English Language Arts to our Upper School students, serves as the faculty sponsor for Winston’s Student Council, and coaches volleyball. Prior to coming to Winston, she worked as an 11th grade English teacher, and coached high school soccer and volleyball.
Jesse Mendez, B.S.
Email: jmendez@winston-sa.org
Education: Mr. Mendez received his Bachelor of Science Degree in Engineering from Texas A&M University in College Station.
Experience: Mr. Mendez teaches Upper School Math and Business, Middle School Science and Lower School Computer Lab. He is a San Antonio native and a retired Marine Major with over 20 years of experience in Logistics, Operations, Planning, and Recruiting.
Cornelio Ontiveros, B.A.S.
Email: contiveros@winston-sa.org
Education: Mr. Ontiveros received his Bachelor of Applied Science from Texas A&M University-Kingsville. Additionally, he is a Welding Engineer, and is certified in mechanics and fabrication welding, multiple process shielded metal arc welding, gas metal arc welding, and gas tungsten arc welding. He holds A36 mild steel, multi stainless steel and aluminum base welding certifications, as per American Welding Society AWS D1.1 code book and API 1104 Pipeline codebook. Retired Military D.A.V.
Experience: Mr. Ontiveros has been an Instructor, Designer, Fabricator and Certified Welder for more than 15 years, and has been an AWS Trainer for more than 11 years at Alamo Colleges. He also has experience as an AWS Inspector.
Linda Osborne, M.S.
Email: losborne@winston-sa.org
Education: Mrs. Osborne received her Bachelor of Science Degree in Elementary Education from The University of Texas at El Paso and her Masters of Arts Degree in Elementary Education from Wayland Baptist University.
Experience: Mrs. Osborne began her teaching career in El Paso. She worked several years at Judson ISD before becoming a math specialist for Northside ISD, where she worked for 15 years. For Mrs. Osborne, five summers as a teacher in the WSSA Summer School Program resulted in a love for The Winston School San Antonio, and all that it represents. She joined our team as a Lower School teacher in 2018.
Franklyn Pacheco, M.S.
Email: fpacheco@winston-sa.org
Education: Mr. Pacheco received his Bachelor of Science in Mathematics from the University of Texas-Pan American (now called University of Texas - Rio Grande Valley) in December 2010. He went on to pursue a Master of Science in Chemical Engineering from the University of Houston and graduated in December 2013.
Experience: Mr. Pacheco teaches Upper School mathematics and science. Prior to Winston, he taught science (mostly physics) and math for 5 years with Houston ISD. He enjoys helping students prepare for academic competitions and hopes to start a math group at Winston. Mr. Pacheco also enjoys playing guitar and teaching martial arts.
Marina Parra-Noonan, M.S.
Email: mnoonan@winston-sa.org
Education: Mrs. Parra-Noonan received her Bachelor of Science Degree in Environmental Science from New Mexico State University and a Master of Science in Geology from The University of Texas at San Antonio.
Experience: Mrs. Parra-Noonan teaches Middle School Science and Upper School Sciences. Prior to coming to Winston in 2014, she taught Environmental Science, Physics, and Biology at Holy Cross of San Antonio, and she taught Middle School in the public school sector.
Donna Pearson
Education: Mrs. Pearson earned a Bachelor of Arts in Political Science and English from the University of Louisiana. Additionally, she received her Master's Degree (and teacher's certification) in Social Studies Education from Louisiana State University.
Experience: Mrs. Pearson teaches US History, assists in the library, and is Winston's building substitute teacher. She taught for almost twenty years in the public school arena in Louisiana, Kansas, and Texas, teaching all subjects within the Social Studies discipline. Mrs. Pearson enjoys walking, gardening, reading, and spending time with her family.
Monica Ramirez-Escamilla, M.Ed.
Richard Rodriguez, B.A.
Email: rrodriguez@winston-sa.org
Education: Mr. Rodriguez received his Bachelor of Arts in Journalism from The University of Texas at Austin.
Experience: Mr. Rodriguez teaches Digital Media I and II, and Graphic Design/Yearbook in our Upper School. Mr. Rodriguez comes to Winston from having served as the President and CEO of Digital Edge, a communications and video production company with clients such as Motorola USA, Cisco Systems, Frost Bank, etc. Mr. Rodriguez also spent time in television sports with both KSAT and KENS.
Deanna Strahl, B.S.
Email: dstrahl@winston-sa.org
Education: Mrs. Strahl received her Bachelor of Science Degree in Elementary Education from Greenville College in Greenville, Illinois.
Experience: Mrs. Strahl teaches Middle and Upper School English and Math. She has over 30 years of teaching experience, including 1-8th grade and K-12 special education. She came to Winston after spending 25 years in the North East Independent School District.
Kimberly Sultemeier, M.A.
Email: ksultemeier@winston-sa.org
Education: Ms. Sultemeier received her Bachelor of Science Degree in Experimental Psychology at The University of the Incarnate Word and attended graduate school at the School of Psychology at Trinity University.
Experience: Ms. Sultemeier is a D-Core Lower School teacher. She teaches Math, Reading, Language, and Science. Before Winston, she taught 5-8 grade Math and Science at St. Thomas More Catholic School. She also taught ESL Biology/Chemistry at Roosevelt HS. She began her teaching career at Fort Sam Houston ISD.
Patrick Villalpando, B.A.
Email: pvillalpando@winston-sa.org
Education: Mr. Villalpando Patrick attended Our Lady of the Lake University where he received a Bachelor's in Music with a concentration in Composition. While in school, Mr.Villalpando participated in both Our Lady of the Lake's Jazz Band and Choir. Outside of class, he also played bass guitar for a few local Jazz and cover bands.
Experience: After graduating from OLLU, he went on to teach music lessons (voice, guitar, bass, piano, drum kit) out of a studio and a few charter schools. Along with that, he followed his love for cultural performing arts to become a technical and production assistant at the historic Guadalupe Theater (Guadalupe Cultural Arts Center).
Meet Our Staff
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Charles Acord
Email: cacord@winston-sa.org
What one word describes Winston? Dedicated.
What do you love most about Winston? I love that each Winston student has the opportunity to grow.
Mr. Acord has been the Director of Maintenance at Winston since 2002. Prior to joining us at Winston, he worked in construction and also owned his own auto repair shop. He holds many certifications, including Ford-trained Service Technician, OSHA, Universal Technician, MVAC Technician, WebCTRL®, Spectra-Physics Laserplane operator, and many others.
Bianca Flores
What one word describes Winston? Inclusive.
What do you love most about Winston? I love Winston because of the diverse group of kids we have here, along with the support and passion our teachers have for all of our students.
Mrs. Flores joined Winston in 2015. She has extensive experience in event planning and management. Mrs. Flores provides administrative assistance to our headmaster. She is also responsible for managing the student's records as our Registrar.
Missy Harris, B.S.N., R.N.
Email: mharris@winston-sa.org
What one word describes Winston? Welcoming.
What do you love most about Winston? At Winston, you don't feel like a number, you feel like a family member.
Mrs. Harris joined Winston in 2018 after gaining experience in an educational setting at AHISD and NEISD. In her spare time, Mrs. Harris enjoys watching her daughters playing sports.
William Lee
What one word describes Winston? Welcoming.
What do you love most about Winston? I love the warm welcome for staff and students alike.
Mr. Lee joined the Winston maintenance team in 2020. Along with Mr. Acord and Mr. Leija, William keeps our school in beautiful condition.
Mario Leija
What one word describes Winston? Amicable.
What do you love most about Winston? I love the warm welcome for staff and students alike.
Mr. Leija joined the Winston maintenance team in 2020. Along with Mr. Acord and Mr. Lee, he keeps our school in beautiful condition.
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Ana Lopez
Email: alopez@winston-sa.org
What one word describes Winston? Extraordinary.
What do you love most about Winston? I love the people at Winston. It's a great environment to be in.
Mrs. Lopez works in Winston’s Business Office processing accounts payable and receivable. Prior to coming to Winston, she had 23 years of experience as the Director of Finance of a local catering company.
Juan Bosco Morales, B.A.
What one word describes Winston? Life-changing.
What do you love most about Winston? I love that my son and his classmates have increased confidence, academics, and a dramatically improved life outlook after being a part of Winston.
Education: Bachelor of Arts in Communications with a major in Radio, Television, and Film from the Universidad Regiomontana.
Mr. Morales began his position as Director of Communications for Winston in 2012. Prior to that, he served as owner and VP of Operations for Digital Edge, a communications and video production company.
Samantha Orozco
Email: sorozco@winston-sa.org
What one word describes Winston? Positive
What do you love most about Winston? I love how friendly everyone is and how happy all the students are to be here.
Education: 2 classes away from receiving my Associates Degree in Education.
Prior to coming to Winston, Ms. Orozco has 2 years of experience as a receptionist for the Petroleum Club of San Antonio, and 8 years of management experience for retail. As a retail manager, she was in charge of data entry for accounting, training new hires, assembly for any new technology, and handled all internet shipping sales. In her free time, she really enjoys spending time with my family and loves to craft.
Carley Senioris, B.A.
What one word describes Winston? Friendly.
What do you love most about Winston? Winston gives students the confidence to learn and grow, in and out of the classroom.
Education: Ms. Senioris received her education from the University of North Texas in Denton, where she studied media arts.
Ms. Senioris began her career at Winston in 2020. Prior to that, she worked as a Creative Director for a local promotional start-up. She has experience in filmmaking and digital media. Her passions are people, art, and love!
Toni Schexnyder, M.Ed.
What one word describes Winston? Unique.
What do you love most about Winston? Everyone at Winston is different, which makes everyone fit in! Winston is a family and we support each other every step of the way.
Education: Bachelor of Arts Degree in English and Theatre; Master of Education in Secondary Education from Texas State University.
Mrs. Schexnyder joined Winston in June of 2016. Previously, she served as an Undergraduate Admissions Counselor at Texas State University. She currently serves on the Executive Board of the Texas Association for College Admission Counseling (TACAC) and serves as a Co-Chair of the TACAC Government Relations Committee. She is also the faculty sponsor for the WSSA Dungeons and Dragons Club and the Winston chapters of the National Beta Club and National Honor Society.
Elizabeth Smith
What one word describes Winston? Welcoming.
What do you love most about Winston? I love how happy everyone is to be here every day.
Prior to coming to Winston, Ms. Smith was the attendance secretary and vice principal's secretary at Health Careers High school for six years . She is currently in her last year of completing her bachelor's degree in Business Administration. In her free time she enjoys reading and spending time with her family.
Denise Williams, M.A.
What one word describes Winston? Family.
What do you love most about Winston? The support and compassion, and the ability to build relationships with families.
Education: Bachelor of Arts Degree in Interdisciplinary Studies; Master of Arts Degree in Counseling from the University of Texas at San Antonio.
Mrs. Williams started her career as a special education teacher before moving into guidance. She served as a Guidance Counselor for area high schools for ten years before settling into her role at Winston in 2011.