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Our Staff

Arroyo School is proud to have an excellent team of educators. A full list of the staff and email addresses can be found on the Contact Us page. See teacher's website or Shutterfly sites for class information.

Mindy Shelton, Principal

  • I started teaching 24 years ago at the elementary school I attended as a child. I taught kindergarten for a year and then 5th grade for 12 years before becoming a TOSA (Teacher on Special Assignment) focusing on school climate and wellness. I love helping students (and teachers!) discover new ideas that help them to be their best selves.
  • I love that 4th and 5th graders are able to think big and are beginning to understand so much more about the world around them. They really start to develop their own sense of identity and values.
  • I live with my husband and 2 sons (ages 12 and 17). I love to travel and spend time with friends. I'm a huge fan of musical theater and I love to listen to audiobooks and podcasts.



Tracey Olazar, Administrative Assistant

  • I have worked as a Para Educator and Administrative Assistant for the San Carlos School District for 6 years. I have worked at Arroyo, Brittan Acres, Central Middle School, and Tierra Linda.
  • In the 4th grade, we used to do a fun rainy day activity call Chicken Fat. It was a fast, fun exercise and we would all end up laughing.
  • I live with my husband, three daughters (16, 20 & 24), and our favorite family member Zoey, our black lab. I love to vacation with my family and friends. I enjoy music, the beach, horseback riding, boating, and camping.

4th Grade Teachers:


Jamie Skinner, 4th Grade Teacher

  • I have been teaching in the San Carlos School District since 2007 and have taught all grades 1st-5th. While I love teaching, I particularly love sharing my passion for learning with my students. We are all lifelong learners and one of my goals is to instill or grow the spark of passion for learning into every student in my class. Watching them make connections to the curriculum and then observing them putting learning into action is always exciting.
  • Fourth grade was the year I first truly realized that the world was so much larger than my little town of Steamboat Springs, CO. It was also the year I became consumed with learning everything about pioneer life and Westward Expansion. I love teaching 4th grade because I am passionate about our country's fascinating history and particularly interested in all things pioneer related. In 4th grade, students are making many cross curriculum connections and for me that is very exciting.
  • My family lives on a small ranch in Loma Mar, right next to where 5th grade goes for Outdoor Ed. It is a true treasure in the heart of the redwoods. My husband and our three daughters love taking care of our 50+ chickens, many goats, ducks, guinea fowl, and assorted cats and dogs. We have three daughters that we are very proud of; Hayley who is at UCSC, Bella who is at Cal Poly SLO and Rori-Kate who is a senior in high school. All three girls attended school in San Carlos, attending both Heather Elementary and Tierra Linda Middle School. Some of my most favorite things to do are cooking or gardening, and I especially love going on traveling adventures with my family. Together we have climbed 5 volcanoes and we are looking forward to climbing many more!

Kirsty Mooney, 4th Grade Teacher

  • I have enjoyed the career of teaching since 2002.
  • My teaching experiences include: K, 1, 2, 3, 5 and 6.
  • Relaxations and passions in life include: Time with my family and friends, being in nature-especially hiking, creature-all with a slight aversion to smaller creatures that “crunch”, science and art, playing with words, sharing that "ah-ha" or "Woah! That’s cool!" moment.

Nicole Murray, 4th Grade Teacher

  • I have been a credentialed teacher since 2005.
  • I received my masters in special education in 2016.
  • I have taught grades K-2 and 4-8 in varying capacities.
  • I was a textbook editor at McGraw-Hill in Chicago.
  • Hobbies: Running, yoga, reading, music, spending time with friends and family!
T, Lamb

Talia Lamb, 4th Grade Teacher

*Bio coming soon!


Sheila Sevilla, 4th Grade Teacher

  • I've been in the SCSD since 2001 and am starting my 24th year teaching. I've taught 4th grade, as well as 1st, 2nd, and 6th grade. I enjoy sharing my enthusiasm for learning with students and helping them get excited about learning as well! I find the 4th grade curriculum very interesting and I love to share my passion for the "Story of California" with my students.
  • It's funny because honestly, my two favorite teachers were, in fact, my fourth and fifth-grade teachers! My 4th-grade teacher, Mr. Schulman told lots of corny jokes and would throw a rubber chicken in the air if someone answered a question correctly. My fifth-grade teacher, Mr. Boudett did a lot of current event competitions and if you won you could pick a prize from items that he brought in from his house! Both teachers connected with their students and left impressions on me that have influenced me as a teacher.
  • I live with my husband and two daughters (11 and 14), as well as our senior dog (18). I enjoy anything outdoors, some favorites are: trail running, hiking, and bike riding. I love spending time with my family (especially in the mountains), traveling, and reading!

5th Grade Teachers:


Marianne Cheatham, 5th Grade Teacher

  • I've been teaching on and off for 27 years. I have taught 1st thru 5th grades. I love seeing the lightbulb go on in the students minds when they understand a new concept and learning about all the different personalities in my class each year.
  • I love going to Outdoor Ed with the 5th graders. It's such fun to see the kids outside of the classroom. You really get to see their personalities shine.
  • I am married and have 3 daughters and a dog. My girls all went through the San Carlos schools (WO and Central), and are now in college and at Sequoia HS. Outside the classroom I enjoy spending time with my family and friends. I love reading, listening to music, baking, and being outdoors.


Jennifer Crettol, 5th Grade Teacher

  • I started teaching 5th grade in 2007 at Central Middle School. I taught 5th grade for nine years at Central, then transferred to Arroyo in 2016 to continue teaching 5th grade.
  • I remember going to Outdoor Ed when I was in 5th grade ~ beach day was my favorite day!
  • I am a Disney fan! I love all things Disney, especially going to Disneyland with my three children!!!

Shelli Murphy, 5th Grade Teacher

  • I have been teaching for 21 years, 20 of which have been in San Carlos. I taught Kindergarten for one year, before finding my sweet spot teaching upper elementary students. (5th and 6th grade)
  • I moved to a new school when I was in 5th grade, and it was one of the most important moments of my life! I'll never forget how welcoming everyone was at my new school, and have tried to carry that spirit with me throughout my teaching career.
  • I'm someone who is constantly on the go, and thrive on being active. Spending time with my family fills my bucket! We have two boys, a junior in high school, and a 7th grader. I'm a devoted hockey mom, and my husband and I love nothing more than watching our boys play.

Angela Naughton, 5th Grade Teacher

  • My teaching career began in 2003, in Arusha, Tanzania, where I volunteered in a K-1 classroom. Since then, I have taught grades 2-8, as a classroom teacher and Resource Specialist. My favorite part of teaching is how every day is different, and brings both triumphs and challenges. Teaching also allows me to be a perpetual "student", as I am continue to learn new things every day!
  • My favorite thing about 5th grade is how it acts as a bridge to middle school. The students are learning to navigate their way to becoming young adults, and show a tremendous amount of growth as they finish their elementary school years.
  • I enjoy reading, writing, exploring new parks and trails, and spending time with my family in San Francisco and Lake Tahoe.

Michelle Robinson, 5th Grade Teacher

  • I started my teaching career in 1997.
  • I have enjoyed teaching both in the middle school and elementary level -  8th, 5th, 4th and 3rd grade.
  • Hobbies: I LOVE laughter and enjoy spending time with family and friends. My favorite place to be is the beach. When I’m not teaching, I love to read and spend time with my family.

Education Specialists:


Jenny Brady

  • Last year I taught 5th and 6th grade at Tierra Linda Middle School.
  • I’m looking forward to a new school.
  • Hobbies: I enjoy traveling, hiking, and spoiling my cat.
Seigel Stern

Miriam Seigel-Stern, Education Specialist

  • I started teaching in 1983 and I have been teaching in San Carlos since 1986. I have taught 1st grade, 2nd grade, 3rd grade, 4th grade and 5th grade. I love working with children because they are funny, curious and developing their personalities.
  • I enjoy watching students develop their sense of self in the world around them.
  • I enjoy spending time outdoors. Riding my bike and taking a walk with a friend makes me happy. I enjoy spending time with my children who live out of state.
Stephany Sedlmayer, Speech-Language Pathologist (SLP)
  • I have been an SLP for five years and I've worked with Pre-K - 5th graders. I enjoy helping my students find their voice whether it be through teaching vocabulary or developing their language skills, practicing producing specific sounds, supporting students who stutter, and using technology (AAC) for students who are non-verbal.
  • I enjoy when student's share their class projects with me because they are so excited about their ideas, research, and presentations. I also love when students share their experiences on field trips such as outdoor ed.
  • I enjoy cuddling with my cat, trying new restaurants with my husband, hiking, going to the gym, and traveling. There is nothing like quality time with family and close friends.
Rosa Molero, Para Educator
  • This will be my 3rd year working at Arroyo. In the past I have taught Spanish at the corporate level and in elementary school in the Lake Oswego school district in Oregon. I love helping kids to learn and help them be confident.
  • To this day I still remember my 5th grade teacher. Her enthusiasm and love for her students had a very positive impact in me.
  • On my free time you will probably find our family enjoying the beach. I also enjoy listening to books on tape while walking.
Veronica Rossi, Special Education Educator
  • Five years ago, I was encouraged to return to the classroom after a 30-year stint in the business world. Initially I supported students from Central’s day class pushing into gen ed courses and the extraordinary teachers who welcomed these students into their classrooms. Working as part of a team to increase students’ self-esteem and academic skills was a joy! I worked with students in grades 5 through 8. Fifth grade seemed to be a pivotal year to me. So, when Arroyo opened, I followed some of my colleagues across campus. I have had the pleasure of working with an amazing fifth grade team for the last three years.
  • Fifth grade is a pivotal year on several levels. Course work is more rigorous, so academic stamina needs to be encouraged. Hormones enter the picture causing big changes physically and emotionally. It’s a confusing time. All students and especially sped students need a little extra attention. I am happy to be part of the team that provides this additional support.
  • Education is a family affair! My older daughter, Dr. Loraine Rossi de Campos is principal of Westborough Jr. High. Our son-in-law, José Campos is the coordinator of the Business Tech Academy at Woodside High School and my husband, Mike subs in grades PK -12 in our hometown of Half Moon Bay. The two outliers in our family are my younger daughter Margaret Widlund and our son-in-law Justin Widlund. They are attorneys and live in the Seattle area. We all enjoy hiking and traveling.
School Counselor:
Julie Jobak
*Bio coming soon!
PE Teachers:

Patti Blumen, PE Teacher

  • I began my teaching career at Central Middle School in 1988.
  • I have taught physical education and coached volleyball and basketball.
  • I grew up in Brentwood, CA (east bay) on a farm producing apricots and pistachios.
  • I love to spend time with my family. I enjoy traveling, hiking, genealogy, and spending time with friends and my dogs.
N, Lamb

Nick Lamb, PE Teacher

  • This is my 9th year teaching in the San Carlos School District. I have taught mostly 5th-8th grade, and am excited to take on 4th grade this year!
  • I took 5th grade at Arundel Elementary and Ms. Francesconi was my teacher, and now I get to work with her as a fellow teacher at Central.
  • Mrs. Lamb and I have been working for the district for a combined 21 years and we both love teaching, almost as much as our kids Jack and Harper.
Exploratory Wheel & Enrichment:

Colyn Fischer, Orchestra and Music Fundamentals

  • I've been teaching music since 2005, starting in my native Pennsylvania and since 2008 here in San Carlos. Before that I was a professional violinist in Pittsburgh and Chicago.
  • I've been playing violin since 1980 and after school I put my musician cape on and try to make the world a little more awesome with my fiddle!
  • I have a cat named "Petunia" with lots of whiskers and personality who likes to sing at night.
  • Hobbies: Hiking, camping, travel, reading, writing, listening to good music and making art!!!

Sarah Moulder, Director of Bands

  • I have been teaching middle school band and orchestra for ten years. I love this age group. Students at this age group are excited, eager to learn, and full of curiosity. Nothing is better than those light bulb moments!
  • This is my first time teaching 5th grade music! I'm excited for the challenge!
  • I love to play in pit orchestras for musical theater and to spend time with family and loved ones.

Heidi Geiges, Makerspace Teacher

  • I have been teaching since 1999, all in the San Carlos School District. I've taught 3rd, 4th, and 5th grades and have worked at Brittan Acres, Central (when it used to be where Arroyo is now), Heather, and Arroyo. Last year I worked at Mariposa setting up and starting their Makerspace for the 5th graders while also running the Arroyo Makerspace for both 4th and 5th graders. This year, in addition, to teaching Makerspace at Arroyo for fourth graders, I will be teaching Design/Innovation (7th/8th graders), Technology Skills (6th graders), and Computer Science (7th/8th graders) at Central Middle School.
  • My sweet spot in teaching is definitely 4th and 5th grade, which is obvious from my experience. My favorite things about 4th and 5th grade are the students are learning new responsibilities, being accountable for themselves, and discovering who they are as people as they get ready for their next big transition, middle school.
  • I am a born and bred New Englander, originally from Connecticut. I love going to the theater, art museums, and listening to live music. Some might call me a "concertaholic!" I also enjoy being outdoors hiking and exploring the many vineyards in the Bay Area!

Staci Kavanagh, Art

*Bio and picture coming soon!

Mindy Hill, Garden/Living School Yard Teacher

  • I've been working in education for the past 27 years teaching in K-8 classrooms, and the past 13 years of that time has been here in SCSD as the Wellness Director. This is my second year teaching at Arroyo and I absolutely love getting to work outside with kids where they really thrive. It's great to see them connect with one another while creating new things. The joy of growing their own food, sharing with others, and improving their school makes the students light up!
  • When I was in 4th grade I used to look forward to Fridays because our principal, Mr. Ellerby, would spend lunch recess playing football with us.
  • My husband and our two sons love outdoor adventures. Every year we meet up with our "river family" to guide our own rafts down a wild river somewhere in the West. This year we even got to bring one of our two dogs rafting with us!



Katie Hultgren, Arroyo/CMS Librarian

  • I have been a librarian here for 6 years. I love making the library a home base for all the kids at Arroyo and Central. I also love finding just the right book for the right kid!
  • I love the enthusiasm I see from our 4th and 5th graders. They are excited to choose their own activities and to come to the library on their own. I usually find a group of them lined up at the door when I arrive in the morning!
  • I am a big crossword fan. I enjoy knitting and hanging out with my family on the weekends. And of course, I love to read and talk about books with friends!

Mr. Garcia

*Bio coming soon!


Mr. Romero


*Bio coming soon!


Ms. Morales


*Bio coming soon!