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First Grade

Christine_Ballesteros Card IconChristine Ballesteros

Ballesteros Family
Mrs. Ballesteros sitting on a butterfly bench
California Adventure
Hello! My name is Mrs. Ballesteros and I am very excited to be your child's first grade teacher! It is going to be a fun year full of learning and new adventures. I know we will get to know one another over the course of the school year, but here are a few things about me!
This is my thirteenth year of teaching, my fourth year as Pioneer School webmaster, and my first year as mentor to new teachers! I completed my Bachelor of Arts degree in Literature, with a concentration in World Literature and Cultural Studies, followed by my Multiple Subject Teaching Credential, and lastly received my Masters in Education, emphasis in Curriculum, focus in Reading Instruction. My teaching experiences range from kindergarten through 4th grade in the New Haven Unified School District, San Ramon Valley Unified School District, and here in Twin Rivers Unified School District! 
Outside of school, I love spending time with my husband and sons. We are a family who loves singing and dancing together. We also like going on adventures to fun places like Disneyland, Discovery Kingdom, the Zoo, Sonoma Train Town, or the Aerospace Museum.
I like butterflies, which is why our class is The Butterfly Class. I enjoy getting lost in a good book. My favorite band of all time is the Backstreet Boys! I am hooked on chocolate, coffee, and Jamba Juice. My favorite sports teams are the Oakland A's, San Francisco 49ers, Golden State Warriors, and especially the San Jose Sharks!
It takes a community to teach a child, a community of parents, guardians, and teachers working together. Parents and guardians are encouraged to email me with any questions or concerns you may have. Cheers to a great year together!

Michael_Espino Card IconMichael Espino

Mr. Espino and his dog
Mr. Espino
Mr. Espino & Lou Seal

My name is Michael Espino and I have this exciting opportunity to be one of Pioneer’s 1st grade teachers. The knowledge, organization, and confidence I have gained during the last 19 years of teaching Kindergarten, 1st, 4th, 5th and 6th grade levels has enabled me to provide an engaging, nurturing, and challenging environment to help all of my students become lifelong learners. I pride myself on being a lifetime learner and educator. I continually strive to improve my effectiveness by earning my Master’s degree in Education at UC Davis School of Education, participating in staff developments, collaborating with my colleagues, and evaluating feedback from parents and administration.

I am excited to make sure that I take your child to a journey where they learn and enjoy to appreciate reading. I would like them to develop strong comprehension skills and leave wanting more knowledge to enhance their learning here at Pioneer Elementary. I expect nothing but the best from a child and make sure that they strive to make efforts in their overall learning. With hard work, the students can also have a fun and enjoyable time in their first grade year. I would like to engage them towards becoming a successful student and member of the community.

I am also very fortunate enough to be part of the Education Technology professional development team working as a Tech Ex/TRUTECH member and now a TRIFORCE member at the Twin Rivers Unified District Educational Technology Department.

If you have any questions or concerns about your child’s education, please feel free to contact me via email or leave a message with the Office.



Ms. Sibrian and her boyfriend
Ms. Sibrian
Ms. Sibrian and her brothers
My name is Hailey Sibrian and this will be my first year teaching! I am so excited to be part of the awesome first grade team at Pioneer Elementary for the 2021-2022 school year and to meet you all.
A little about myself. I went to California State University, Sacramento where I completed my Bachelor's of Arts degree in Child Development, followed by my Multiple Subject Teaching Credential, and lastly received my Masters in Education at Brandman University. Before becoming a teacher I was an after school leader for 5 years at Westside Elementary and a substitute for the district for 3 years. I am bilingual and speak Spanish.
Outside of school, I love traveling and going to new places. I also started collecting different succulents and houseplants during the Pandemic and became a hobby of mine. They bring me peace and joy and decided to bring that into my classroom with the succulent/plant theme. My love for animals has brought me to have two horses, a goat, a dog, 4 outside cats and 2 kittens. I like listening to Podcasts and enjoy all kinds a music such as country, reggae, reggaeton, rock, merengue, and hip hop etc. I am hooked on bubble tea, sushi and have a major sweet tooth.
I am looking forward to teaching all of my amazing 1st graders! Please let me know if you have any questions or concerns. I look forward to a great year together.