school@stmaryum.org | 301-627-4170

1:8

Staff / Student Ratio

100%

Catholic High School Acceptance Rate

30

Countries Represented

Why choose St. Mary of the Assumption?

It is our mission, to teach the whole child, providing an excellent education, preparing them to be successful in this world, while keeping their “eyes fixed on heaven”.

The Priority Deadline for Applications for the 2025-2026 school year has passed.

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Alumnus Jaydon Crawford 23 won gold in point sparring at the World Martial Arts Games in Oslo, Norway. Congratulations, Jaydon!!
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Congratulations!

Congratulations Jaydon.

Congrats!

Wow! That’s amazing!!!

🥳 Congrats!

Congratulations Jason well done

Congratulations 👏👏👏

Amazing! I’m so proud of you!

WOW! Thats incredible! Congrats Jaydon!

Well done, Jaydon! 👏

So proud of you Jaydon

Congratulations, Jaydon! 🎉

Wow!!! Amazing!!!🤩

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We took advantage of the gorgeous weather today and decided to have a Fire Drill! Thankfully, all went well! #SafetyFirstAtSMA
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Yesterday concluded a wonderful Hispanic Heritage Month at SMA! Thank you to our Hispanic Heritage Committee and all of the faculty, staff, parents, and students who contributed to celebrating the richness and diversity of Hispanic heritage within our school community! #HispanicHeritageMonth #CelebratingDiversity #ADWcommUNITY
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Everyone is dressed so lovely and so proud of the work in the hallways so proud of our teachers showing such diversity in our school thank you.

It fills my heart to know my daughters are growing up in a school that values diversity and creates space for every student to be proud of who they are and where they come from. 🇵🇷🙏🏼 Thank you to the teachers, staff, and families who made it happen, you reminded all of us that representation matters. 💛❤️💙

Yes! SMA!

Mr. Summers ordered our middle school math teachers wore spirit shirts showing off our love of math! The back spells out the names of Mr. Summers, Ms. White, and Mrs. Lewis. #ADWcommUNITY
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What a creative idea and a great way to promote so many different ways and places we use (and enjoy) math! 🤩

What a great idea

Awsome .

Congratulations to St. Mary of the Assumption School as we celebrated our Centennial Weekend! Friday - Centennial Courtyard Dedication and IHM Library Dedication; Saturday- Centennial Gala; Sunday- Centennial Mass and Centennial Cookout with Open House! #ThankYouLord #AmazingWeekend #100YearsOfExcellence
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❤️❤️❤️❤️

Thanks to all who planned this beauitful Centennial celebration it was an amazing weekend

We began our Centennial Weekend with Mass, a dedication of our Centennial Courtyard, and the dedication of the newly named Sisters of IHM Library and Media Center. We honored Rose Hartman and Sister Kathryn Clauss, IHM with the first of our IHM Legacy Awards. We are especially grateful to Dr. Davis for the months of planning and organizing she spent creating our Centennial Courtyard, and to Mrs. Plá for all her work towards the library dedication. We look forward to two more days of Centennial Celebrations! #ADWcommUNITY
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Ah, Sister Joyce--how wonderful!

It was a beautiful celebration

Love this!!

So sorry I couldent be with you today but hope everyone enjoyed the beauitful mass.

Congratulations to all for your dedication, service and kindness to our children 💙

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Kindergarten and 6th Grade teamed up to read The Kindness Quilt and created their own kindness quilt. The students had a great time working together! #ADWcommUNITY
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Six of these staff members are receiving legacy awards this weekend. Can you spot them? #ADWcommUNITY
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Sister Joyce, Steve Showalter, Rose Hartman-- I am sure I forgot someone!

hey there’s momma

Wanda Keplinger 💕

Wow, this was the year after I graduated; I’m glad I didn’t drive them all crazy! These people were so formative in my education. 🤓

Sister Joyce Marks, Steve Showalter, Mary Hogan, Rose Hartman, Kathy Vassalo. Who am I missing?

Also Michele Young

Wanda Keplinger!! ❤️❤️❤️❤️

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Middle school students participated in a virtual 9/11 Memorial and Museum experience today. May peace prevail on earth 🕊️ #rememberthesky #ADWcommUNITY
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Students in the 1940s in the old one room schoolhouse. #ADWcommUNITY
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Wow; it’s amazing that when I started at Saint Mary’s in the first grade (1988–1989 school year) was about halfway between then and now!

So great to see the old photos we can't get rid of truth

Wonderful picture!!

Thanks Coach Neil for organizing the parent/Student soccer game. Even Fr. McHale got in on the fun! #ADWcommUNITY
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Great game! Loved that Father joined in!