Welcome to Mathnasium of San Marcos
About Our Center

Also available in your area, real-time face-to-face instruction over an internet connection.
Sun | CLOSED |
Mon | 2PM - 7:30PM |
Tues | 2PM - 7:30PM |
Wed | 2PM - 7:30PM |
Thurs | 2PM - 7:30PM |
Fri | CLOSED |
Sat | 10 AM - 2 PM |
Why Choose Mathnasium?
May 24, 2022
Betty McDonald
Everyone is willing to help our daughters when they need extra help with real time homework. Our pre-Calc student has gone from being at the bottom of the class to the top. Our pre-Algebra student is more confident and no longer avoids doing her homework.
May 14, 2022
G.R.
Mathnasium has been wonderful for my 7-year-old foster daughter who is a year behind in school. She’s making progress and loves attending. I wanted her to love math and not feel bad about being behind. San Marcos’ Mathnasium has achieved both these goals.
Mathnasium of San Marcos Reviews
May 24, 2022
Betty McDonald
Everyone is willing to help our daughters when they need extra help with real time homework. Our pre-Calc student has gone from being at the bottom of the class to the top. Our pre-Algebra student is more confident and no longer avoids doing her homework.
May 14, 2022
G.R.
Mathnasium has been wonderful for my 7-year-old foster daughter who is a year behind in school. She’s making progress and loves attending. I wanted her to love math and not feel bad about being behind. San Marcos’ Mathnasium has achieved both these goals.
May 9, 2022
Jenica Grimwood
Mathnasium in San Marcos has been a game changer for our family. Our daughter’s confidence, proficiency, and attitude in math has completely done a 360 turn with the help of Casey and their amazing team. Highly recommended!
April 30, 2022
Coach Henderson
Mathnasiun A+ has opened up new worlds🌎in math🎓for my son👶
April 26, 2022
Michelle Crenshaw
The team here in San Marcos is incredible! I have already shared this place with other parents and we will be back! They are kind, helpful and adaptable. Whatever my son needed he was given. Bravo to the San Marcos team!
April 24, 2022
Ryan Brubeck
Everyone here at Mathnasium is awesome! My son has gone from F's to B's this semester. The staff is great at explaining the steps and procedures for all the different disciplines of math! I would highly recommend Mathnasium to any one with kids!
April 18, 2022
Aline Kleefstra
My kids are going to Mathnasium for years. Definitely recommend!
April 7, 2022
Kathy Moore
We love it here! No more stressing on trying to find a math tutor or waiting for the teachers attention to help my daughter. Everyone is so nice and so helpful!
March 25, 2022
Amy Jones
Our daughter’s confidence has soared since starting at Mathnasium! She loves going and is so motivated to learn. It has helped so much!
March 10, 2022
Valeh Inskeep
We absolutely love mathnasium! I’m seeing the kids confidence increase everyday!!! I couldn’t be happier or more proud.
March 7, 2022
B.S.
Kevin, Casey and the rest of the staff are beyond fantastic. They are truly interested in helping the students progress and always take whatever time is necessary to achieve that goal.
February 24, 2022
Betty McDonald
We like that your Mathnsium helps with real time homework as it seeks to strengthen foundation. Other Mstbnasiums and KUMON often do not help with current struggles.
February 21, 2022
E.Y.F.
My daughter has improved math skills, and confidence. Thank you
February 17, 2022
Traci Tar
Due to the kind and patient employees at Mathnasium my daughter is FINALLY becoming confident in her math skills. Even better her school grade is better!!!
Thank you
February 17, 2022
Jamie Conrad
Everyone has helped my daughter immensely. She has gained more confidence in math.
February 10, 2022
Tiphni Horak
Jaxon enjoys going to math very much and has learned a lot! He likes working with Matt because he is very nice and he makes it fun!
February 9, 2022
Dian Andriyani
My son is always happy to learn math at San Marcos Mathnasium.
February 3, 2022
Iris Hariri
My girls have been attending San Marcos Mathnasium for 2 years now. They love the center and they love math!
February 3, 2022
Todd Knapek
Mathnasium has been amazing for my kid. He was stuck academically right where he was when Covid hit a couple of years ago. A couple of months with the wonderful folks at Mathnasium have gotten him back on-track, and now he would prefer to learn there, instead of in class! Love Mathnasium!
January 18, 2022
L.C.
We've been here for 4 years. My child loves this Mathnasium so much !!!
January 17, 2022
Ashley Ayub
We adore Casey! My daughter really enjoys going to this location. We have been so welcomed there.
January 17, 2022
Ryan Brubeck
My son loves going to Mathnasium. Everyone there is very helpful and friendly. Mathnasium has help build confidence in my son with his math sills. We have been going here for the last few years and will continue coming here .Casey is the best!!!! I would recommend Mathnasium to everyone I know who has kids!!!
January 14, 2022
Maria Hernandez
Great Team!! Amazing! Love there kind Amazing staff who always make my daughter feel comfortable. Major confidence booster. Always get challenged & keep her motivated. True blessings especially knowing she just learn differently. Mathnasium has braced her unique learning!!
Highly recommend Mathnasium!
January 10, 2022
Aline Kleefstra
Casey and Kevin have an excellent team to work with the kids. We love how the kids feel comfortable going to Mathnasium and are doing so well. We 100% recommend!
December 16, 2021
Amy Jones
Mathnasium has become my daughter’s favorite part of the week! She always looks forward to coming and she is never ready to leave when I pick her up- wishing she could stay longer! Math used to be her least favorite part of school, but she is growing in confidence and skills, and is even enjoying math now. It has blessed our family!
December 5, 2021
Aileen Holbrook
From the first day, everyone especially Casey was so welcoming and positive. Nick is having a great time learning and enjoys going to Mathnasium.
December 1, 2021
Aurora Aguilar
Good Environment, friendly approaching, My son is willing to go ,he looks happy to go This is very important to me because if he is happy he will be willing to learn.
November 20, 2021
Elena Ybarra Figueroa
My daughter has a very positive experience going to mathnasium. I am very thankful for their services. My daughter was failing math and now she gets A’s and B’s. She has caught up with her grade level as well. I highly recommend mathnasium to any student that is falling behind or needs that extra encouragement.
November 20, 2021
Linda Fuchs
Wonderful experience! We have seen so
Much progress in such a short time/. Thank you for everything!
November 9, 2021
Andrea Brandon
Casey is responsive, sweet and genuine. Gia enjoys going to Mathnasium every week to crystallize the concepts she is learning at school. We are very glad we enrolled Gia in the tutoring program.
November 4, 2021
Mustafa Nizam
So far my daughter has been happy to go there and is now motivated in Math. Thank you Casey and team!
November 2, 2021
Tiphni Horak
My son loves the program and has excelled in school Math.
October 29, 2021
Stacey Stoefen
We were astonished to find our 16 year old motivated to go without prompting ! However you motivate trends it’s amazing we are very impressed!
October 25, 2021
Jolynn Zarazua
Amazing!!!! My son loves Ms. Casey and her team. Not only do they help him with math, they provide a safe, secure, and positive place for him. They have helped him build his confidence and understanding that he isn’t the only one who struggles with math. He has gone up a grade level in math and really enjoys working for the prizes they offer. We love in center and occasionally do online when our schedule is crammed with extracurriculars. I love how the team connects with their students, my son may not remember their name, but he will tell me “mom, that’s the guy who likes Fortnite, like me” or “mom, she is the girl who asked me what color I think she should get next for her nails.” I love that they are connecting with my son and it’s not just a lets sit down and do worksheets and get you in and outta here, they build a connection and make him feel special. 💕
I recommended Mathnasium San Marcos to a coworker for her son and she loves it equally.
10/10
October 24, 2021
Christina Seals
My son started with a D grade from seventh grade. When he finished one year of Mathnasium during eighth grade he ended up with a C. the next year for ninth grade he got a B in algebra I after the first quarter. He is so happy and proud of himself now! He is able to work independently now and able to learn from The teachers instructions. Amazing!
October 23, 2021
P.S.
Casey and her staff are wonderful! Both of my kids have attended and their confidence, understanding and skills improved quickly. They have a great positive environment and it's very obvious why. The place is packed every day, but it's still easy to get help needed. So glad we found them.
October 23, 2021
Coach Henderson
My(son)Whit has excelled in Math at Mathnasiun he loves going there and that is the most important thing when you are teaching kids anything How much they like it!! A+
October 10, 2021
Aline Kleefstra
We are so happy to have our girls in Mathnasium. You will find great, supportive teachers there. They are doing so well in Math. Great program for kids who need more challenging content and for kids who need help. Recommend!
October 10, 2021
W.K.
We love Mathnasium! Our girls love going and have learned so much.
October 3, 2021
Ellee Cavazos
I love the way my three kids (13, 11 and 8) feel when they leave Mathnasium...energized and feeling like they did a good job. That is 100% due to the positive environment they have created at Mathnasium San Marcos. I wish all kids could feel the way mine do after 1 hour of math!!
September 28, 2021
M.S.
My 7 year old son has gained so much confidence in Math. He is always looking forward to his sessions. It’s amazing to see how much he has learned in a small period of time.
September 15, 2021
M.D.
We have two kids attending mathnasiun and they both live going and they have greatly improved in math
September 4, 2021
N.C.
This location is outstanding! Kevin and Cassie are amazing and Hardworking, very friendly. Me and my son loves their teaching style so much! My son always look forward to fo to class even on long tired days from school. Thank you so much San Marcos Mathnasium!
August 31, 2021
Aurora Aguilar
My son felt very comfortable. Math is not his favorite, but when he started participating in the Mathnasium program he felt confident that he will learn. People are very welcoming, you feel at home. They have insensitives for the students to motivate them to achieve. Thank You
August 31, 2021
Stephanie Kowalski
We are very grateful for all the help that our daughter is receiving at San Marcos Mathnasium. She is starting to understand Math better and actually enjoying it now too!
August 23, 2021
Yvette Graves
We love Miss.Casey and the math center. Very welcoming to my kids and excellent math teachers to guide them.
August 21, 2021
J.M.
My daughter goes there and not only does she love it. Her grades drastically improved.
August 21, 2021
Meenu Bawa
The staff is absolutely wonderful - Knowledgeable , friendly and very accommodating.
August 18, 2021
Sara Bucelli
Casey and her team are lovely, friendly, knowledgeable people. So helpful with keeping math fun and enjoyable. Thank you!
August 14, 2021
Sharmin Willer
Casey and the tours are excellent. We go 3 times a week. My kids love going to math tuition.
August 4, 2021
A.A.
My son looks to gain some confidence with math. He always refuse to do math. With just one month he gain some confidence and he was ready to go to his class. Mrs. Casey very welcoming. Good , friendly, good vibes environment. My son will continue to enrich his confidence in Math.
July 23, 2021
Coach Henderson
My boy Whit's skill in Math has gone through the roof!!!! He loves Mathnasiun and goes 5 days a week year round. The most important thing is that it is fun for him. He won't miss a day!!!
July 16, 2021
Christy Lorson
Our kids all love going and you all are some of the nicest people ever!!!
July 15, 2021
L.L.
My son was brought to Mathnasium very reluctantly. He was not happy during the intake and continued to make it known he wasn’t happy going into his first appointment. But he came out of that appointment all smiles!!! He now absolutely loves going and actually asks to go every day. He even requested to go on his birthday! Both my kids love all the tutors, and Casey is a class act! I highly recommend Mathnasium!
July 14, 2021
K.L.
Our daughter really enjoys going to Mathnasium and doing math, which is a subject she’s never been excited about before. Everyone at Mathnasium is supportive and helpful. Great experience so far!
July 10, 2021
Aline Kleefstra
Mathnasium of San Marcos is such a wonderful place. The teachers are so nice and very helpful. Casey and Kevin are always pleasant and easygoing.
My daughters enjoy going there and they have learned so much.
Definitely recommend!
July 7, 2021
Sarah Sharp
My daughter came from a low 3rd grade skill level to a high 5th grade level in only 9 dedicated months! She feels good about middle school now, and I feel better about her math confidence for the rest of her life! I eventually sent my son too; he loves all things STEM and this was his Wonderland. The Tutors and Directors are clear, caring communicators, and the facility is consistently spotless and smells great. We'll always remember our time with San Marcos Mathnasium fondly and thankfully! So will you.
June 19, 2021
A.P.
I highly recommend the San Marcos Mathnasium center. Casey, Kevin, and their team are amazing. They genuinely care for their students and personalize every session. My son was behind in math due to his learning disability and they helped him so much! He is now very confident in math. Thank you
June 15, 2021
Jolynn Zarazua
We LOVE Mathnasium and Ms. Kasey!! My son went from a 2 in math up to a 3 in just a few months! Ms. Kasey and her staff always greet him warmly and make him feel welcome. He really needs the interaction with others after being holed away in his room for so long without a social scene. I recommend Mathnasium to a friend from work, who now brings her son and equally loves it!! The prizes are great incentives, who doesn’t want to get paid for their work, right?! Ms. Kasey is totally up on everything the kids are into so she can chit chat about their favorite topics from movies, activities, and YouTube videos!!
June 13, 2021
Janine Aurora
We love Casey! My daughter got her confidence back and earned an A in math!
June 10, 2021
Bruce Scherter
We've been going to Mathnasium for about 3 years now and it has been an outstanding experience. Even through COVID they have kept our kids above the curve and continue to help them progress.
June 7, 2021
J.A.
Our daughter breezed though geometry this year with the help of Mathnasium. We are very happy with her success!
May 28, 2021
Lisa Daniels
My kids love going to Mathnasium. The staff is friendly, welcoming and they present the learning in a way that is accessible and engaging.
May 25, 2021
C.S.
My son was very leery of attending at first, but now sees the value and enjoys what Mathnasium has done for his math skills. Thank you!
May 22, 2021
Yvette Graves
We live this program! And especially Mrs.Casey the owner. She is the sweetest and does her best to make the kids feel welcomed!
May 13, 2021
Aileen Tabagan
My son loves it and help him a lot in doing Math problems
May 6, 2021
Shawnele Morelos
Sybilla absolutely loves Mathnasium and she has already shown improvement after only a month of attending! So happy we found this place!
May 3, 2021
V.T.
Mathnasium with Casey and team are wonderful and pleasant. They totally work with your child's needs. Of all the learning centers, this particular one is a keeper!
May 3, 2021
Dave Jacob
Mathnasium was just the bump my son needed to get on track. The staff is enthusiastic and encouraging. The methods they use to teach should be adopted everywhere.
April 26, 2021
Sarah Sharp
Your mission is clear. The steps are clear. The communication is positive and clear. The results are clear!
April 16, 2021
Leah Cai
My daughter just like to go Mathnasium every day. Not only she learns Math but also she likes people there. Very good study environment.
April 15, 2021
Michael Gerasimovich
The staff and curriculum at the San Marcos Mathnasium is unmatched. They have helped my son grow from a shy and uncomfortable student to a confident math student. He went from being behind grade level to on grade level and growing. They make it fun with the opportunity to win prizes and keeping the students on task. They took protocols for returning in the time of Covid very seriously, and brought the students back into a safe environment with still the love and understanding that kids need.
April 10, 2021
Araceli Angulo
My daughter has been going since August and loves going and learning math. She loves the staff and has been flying through math thanks to the tutoring. We recommend to everyone.
April 3, 2021
K.F.
Mathnasium rocks! Thank you for all the support you provide me and Ava with!
April 1, 2021
Zack Wiswell
Casey is soooo wonderful! We have been nothing but pleased! ❤️
March 23, 2021
Chelsey Christensen
My son used to hate math and was falling very behind. Working with the tutors at Mathnasium has been life changing. He is confident, he’s getting concepts and usually can’t wait to go. Best money we’re spent!
March 20, 2021
Susan Gaines
Casey is very accommodating to a crazy schedule (when I often do not know until the last minute when my kids can make it). Very friendly and the kids love it. It is giving mom piece of mind to know they are getting extra help, which is difficult for me to provide!
March 20, 2021
Ashlee Hardy
We have loved Mathnasiun! It has been a huge blessing for our family! My sons math skills have advanced in just the first 3 months of attending. His now has confidence in answering math questions and feels more comfortable with it. We are so glad we found Mathnasiun and would recommend it to anyone.
March 14, 2021
Mike Burns
Tremendous benefit for our two children, especially when they've been missing so much due to the pandemic. Nothing but absolute praise for every single tutor that has helped our kids this past year. A year ago my 10 year old was far behind his peers, now he's testing at grade level and even beyond that level in some areas. His lack of confidence in math had really shaken him. Now he's brimming with pride and confidence with his math skills, and it really shows. Not just in math but this has been an all around confidence booster for him. An added perk is that both our kids really enjoy going to mathnasium which I find amazing; it just makes this whole experience easier on everyone. Clearly you guys are doing pretty much everything right! If your child falls behind in a subject, with some effort they can usually play catch up on their own. But playing catch-up with math is uniquely difficult and often requires tutoring well into the college years. From my own experience, falling behind in math and not catching up at a young age can make math intimidating and it may even become a life long struggle. Thanks to mathnasium my kids will probably avoid that dilemma. Thank you for all you have done and continue to do!
March 8, 2021
Kalia Kincade
I had a great experience with Mathnasium. My daughter really received the support she needed on an educational level and personal level. Math is a subject to easily lose self esteem with and the Mathnasium staff knew how to approach my daughter in a way that made her feel like she could teach a class on the topics of study. Mathnasium has been my go to business to support my daughter's needs in pre-algebra, Algebra and Geometry. Thanks so much.
March 8, 2021
Dave Jacob
We have come to realize that not all learning centers are as well thought out as Mathnasium, and not all Mathnasiums are staffed and run as well as San Marcos. It is an amazing fusion of great curriculum and a super enthusiastic staff. You are going to love the owners.
January 27, 2021
Sarah Sharp
My daughter is growing in math confidence and feeling more secure about school on the whole. The positive, responsible attitudes she acquires at Mathnasium are boosting other areas of academics and family life too!
January 19, 2021
Jennifer Wren
I love Mathnasium San Marcos! They have made a huge impact in my son's learning process and confidence. The staff and owners are the best!
Athletes and Mathematicians: The Perfect Pair
May 23 2022
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What Can Mathnasium Offer Your Advanced Math Student?
May 21 2022
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What Can Mathnasium Offer An Advanced Math Student?
May 20 2022
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Hello. We are Kevin and Casey Magnuson, of Mathnasium of San Marcos, your neighborhood math-only learning center. We help kids in grades 1-12 understand math by teaching the way that makes sense to them.
When math makes sense, kids leap way ahead – whether they started out far behind or already ahead in math. Our formula for teaching kids math, the Mathnasium Method™ has transformed the way kids learn math for over a decade across 1,000+ centers in the US and Canada:
Our specially trained math instructors will teach your child how to understand math in an individual setting – our unique approach enables us to effectively explain math concepts and lend a helping hand to every student. Our tutors foster a caring, encouraging environment that helps kids thrive and learn!
Mathnasium instructors use our unique assessment process to determine (with great accuracy) exactly what each child knows and what they need to learn. Next, we design a customized learning plan for teaching the concepts the student needs to master. It doesn’t stop there – our encouraging instructors continually check progress along the way to make sure kids truly understand and retain the concepts we’ve taught. The results are transformative – kids will see measurable changes in attitude, confidence, and school progress.
Our instructors will also set aside time to provide homework help. We help kids understand the homework assignment so they feel better prepared to complete the work at home – underscoring their understanding of concepts and transforming homework frustration into a welcome challenge.