Building a firm foundation through Christ-centered education.

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Mariners Christian School TK teacher praying-with-girl

Love for Christ

Exemplary Academics

Mariners Christian School Institute of the Arts0

Whole Child Focus

Mariners Christian School 22 Fall089 elementary girls lunch

Connected Community


Culture of Innovation

Mariners Christian School Oceanside opens Fall 2024 for TK - 1st Grades!

"building a firm foundation through Christ-centered education"

Core Values of MCS

Love For Christ

Discipling students to love God's Word, grow in personal relationships with Jesus, understand how to defend their faith, and inspire them to be Difference Makers for His Kingdom.

Exemplary Academics

Developing lifelong learners through rigorous academic standards focused on mastery of content, Biblical worldview integration, and cultivation of necessary skills and habits to continually grow as scholars.

Whole Child Focus

Meeting the academic, social, emotional, physical, and spiritual needs of the whole child by unlocking giftings, strengths, talents, potential, and passions so that all continually grow in who God has created them to be.

Connected Community

Building relationships and belonging within a unified community that models Jesus' command to love God and love others.

Culture of Innovation

Nurturing curiosity, imagination, and passion through research-based design thinking that provides avenues for discovery, creativity, invention, and problem solving.


MCS Oceanside Important Dates!


Mariners Christian School young boys reading

Join our current prospective parents of our Costa Mesa campus. At our Preview Night, you’ll be able to visit our Costa Mesa campus, hear from our Administration, take a tour, and speak directly with teachers in the grade levels of your interest.

Register Now!

Take a sneak peek into our TK/K/1 program at our Costa Mesa campus. Come hear about Mariners Christian School core values and programs designed for your student. We’ll pop into some of our specialists’ classrooms that will be consistent with our Oceanside campus. Tour is 10:30 am – 12:00 pm.

Register now

Parents, you’re invited to tour our new and “under construction” campus in Oceanside. You’ll have the opportunity to see and explore a model classroom, tour the campus and hear from our administration. Preview and tours are from 9:00 am – 1:00 pm, lasting about 45 min.

Register now!

Parents, you’re invited to tour our new and “under construction” campus in Oceanside. You’ll have the opportunity to see and explore a model classroom, tour the campus and hear from our administration. Preview and tours are from 9:00 am – 1:00 pm, lasting about 45 min.

Register now!

Join us for an Open House for prospective TK-1st grade families on March 20, 2024 from 10:00 am – 1:00 pm. Families will have an opportunity to hear from our school administration and students about why Mariners Christian School is such a special community. You’ll get a glimpse into our amazing school and how we partner with parents to build a firm foundation through Christ-centered education.

Register Now!

Join us at 6:30 pm for our Oceanside campus Preview Night featuring grades TK-1st. Our evening will include a presentation from our Administration and fun activities to explore and learn about Mariners Christian School and our new campus. 

Welcome to Mariners Christian School, Oceanside

Mariners Christian School Oceanside Principal, Kim DeAllen

Contact Us: (442)-500-5848
4010 Mystra Dr, Oceanside, CA 92056

I am excited and honored to serve as the Principal for the new Mariners Christian School Oceanside campus that will launch for the 2024-2025 school year. MCS is truly grateful to open a second campus on the grounds of Mariners Church, Oceanside. 

Our mission, “building a firm foundation through Christ-centered education” has guided us for over 37 years and this will continue to be true for MCS Oceanside. Our commitment to seeing every student thrive in a Christ-honoring environment is unwavering.

We are a distinctly Christian, covenant school dedicated to the continual pursuit of our core values to foster a deep Love for Christ, provide Exemplary Academics, build Connected Community, and promote a Culture of Innovation with a purposeful Focus on the Whole Child

David writes in Psalm 139 “I praise you, for I am fearfully and wonderfully made. Wonderful are your works; my soul knows it well.” We believe that each student is uniquely and wonderfully made in the image of God. Through programs such as Maker Education, Art, and Music, MCS is passionate about nurturing and growing the unique gifts and passions of each child.

In addition, MCS strives to foster a joy of learning through rigorous and comprehensive instruction, academic programs, and curriculum all taught through a Biblical worldview. Differentiation is provided through small group instruction as we provide safe and nurturing learning environments that engage students in their learning. 

It is our prayerful desire that our students develop a deep love for Christ reflected in their hearts, actions, and character. We want students to know Jesus’ love for them, His truth, and that their identity is found in Him. MCS is a place where your child will be loved, challenged, and nurtured academically, spiritually, socially, and emotionally. 

I invite you to complete the inquiry form to learn more about MCS, tour our Costa Mesa campus, attend MCS Oceanside preview and informational events, and attend the upcoming Spring Open House. Come see what being a MCS lion is all about! We are excited about the possibility to partner with you to “build a firm foundation” that will last a lifetime.

In His Service,
Kimberly DeAllen

Building a firm foundation through a Christ-centered education


SINCE 1987

Rated one of the best Christian schools in Orange County, MCS is a co-educational, independent Christian school that started in Costa Mesa, California in 1987. Since our first day, our mission is “building a firm foundation through Christ-centered education” in the heart and mind of every child.

Mariners Christian School is committed to building a strong foundation through a Christ-centered education for Orange County families. God launched our private Christian school with the belief that character development and exemplary academics can be offered in a single program. We’ve had big dreams and He has been with us each step of the way.

As we embark on opening our second campus in Oceanside, we welcome you to learn what we plan to offer in the 2024-2025 school year for TK through 1st grade students. Our current families, alumni, grandparents and community friends have prayed fervently, and as part of our 5-year strategic plan, our prayers have been answered to provide Oceanside families an option for a Christian education.

It is with great intention that we seek to grow in our understanding of who He is and who we are in Him in our lives, our school, and our community.

“Train up a child in the way they should go and when they are old, they will not depart from it.”

MCS Oceanside at a Glance

Grades Offered '24

TK, K, and 1st


1/2 Day with 18 students per class

K - 1st

Full day with 24 students per class

# Teachers

Each Grade Has a Teacher
+ Aide


Mariners Church Campus
4010 Mystra Dr.
Oceanside, CA 82056