Our Results

94% of Mosaic Admissions’ clients have earned admission to one of their top three college choices. Many have been admitted to the nation’s most prestigious colleges, including Harvard University, Princeton University, Yale University, Brown University, Dartmouth College, Cornell University,                       University of Pennsylvania, Stanford University, MIT, University of Oxford, Georgetown University, Duke University, Northwestern University,                 Williams College, Wesleyan University, Amherst College and Boston College.


Sarah was a pleasure to work with. She took an overwhelming and monumental undertaking, particularly given that we were living abroad, and guided us through the process in manageable steps. She has a vast and deep range of knowledge about colleges and suggested an array of options so that our daughter could chart her path. When our daughter decided to write an essay on a topic that all the blogs will tell you explicitly to avoid at all costs, Sarah worked with our daughter to craft an essay that was truly the story our daughter wanted to tell, and admissions committees wanted to read. In the end, she got an early admission offer to her first-choice school: Barnard. She is thrilled with her choice. Our family recommends Sarah’s services without hesitation.

Father of Barnard College student, Class of 2023

I would highly recommend Sarah and Mosaic Admissions. Her guidance when working with my son made what would have been an overwhelming process easy and enjoyable. Sarah’s expertise in evaluating “right fit” colleges, providing detailed information about these colleges, and helping with application essays and timelines afforded us peace of mind in knowing that we were doing everything right.

Mom of College of Wooster graduate, Class of 2021

When my daughter was in the middle of her college search, she had lots of school names, but no context. I interviewed several college counselors and settled upon Sarah Tierney, primarily due to her calm demeanor, which was one quality gravely lacking in our household. I soon learned that Sarah was a Harvard undergraduate and received her MBA from the Kellogg School of Management, a fact that she had not trumpeted to me earlier. I also learned that she had worked in the Admissions Office at Northwestern University. These experiences alone clearly lend tremendous credibility to Sarah’s resume; however, her ability to connect with teenagers and parents alike in the context of a stressful environment is, I believe, why she is so successful. I have since referred both my niece and nephew to Sarah, and they have both been delighted with her unique skills; foremost among them is her college essay editing, which is unsurpassed. I would not hesitate to recommend Sarah in the future.

Dad of Lewis & Clark College graduate, Class of 2016

Sarah was invaluable in guiding our daughter through the daunting task of applying to college. She provided detailed, thoughtful feedback that enabled our daughter to present her experiences and capabilities in an engaging and compelling manner. Sarah also worked tirelessly, leveraging her wealth of knowledge and contacts, to answer endless questions about various college admissions procedures and to prepare our daughter for alumni interviews. Perhaps most importantly, Sarah’s warm manner and upbeat attitude empowered our daughter and reduced her stress throughout the process. Sarah played a key role in our daughter’s admission to her first choice university. We highly recommend her.

Mom of Duke University graduate, Class of 2015

Sarah was a tremendous asset during our college search. She brought great value to the process by suggesting schools we never would have thought of, keeping our daughter on track and focused and most of all, doing an outstanding job with help on the essays. In fact, our daughter ended up choosing one of the schools that Sarah recommended and she couldn’t be happier. Sarah brings insight, research, professionalism and creativity to this arduous process. She also has the perfect demeanor for working with teens!

Mom of College of Charleston graduate, Class of 2014

Sarah got all three of our sons through one of the most stressful times in a family’s life – the college application process.  She was invaluable when it came to writing the essays, which can be the most difficult part of the experience.  Not only is her knowledge of the components of a good essay amazing, but also she was able to motivate and help our boys structure their essays to really reveal something about themselves.

Mom of Harvard University graduate, Class of 2006, University of San Diego graduate, Class of 2009, and University of San Diego student, Class of 2012

Sarah Tierney did a fantastic job of focusing my high school student.  She helped him wade through college possibilities by discussing his interests, school locations and reality of admission.  Beyond that, Sarah’s assistance on the actual applications, especially the essay, was indispensable.  She really knows how to connect with young people, making them feel comfortable and confident.  My son actually enjoyed the process because of Sarah.

Mom of American University graduate, Class of 2006

Sarah was instrumental in Jack’s admission to Harvard.  Her advice on how to approach the written application, essays, and alumni interview enabled him to convey who he truly is, and her enthusiasm and organization helped to keep him motivated and on track. I don’t believe anyone else could have worked so effectively with Jack.  I’d be delighted to serve as a reference for Sarah and to recommend her to prospective clients.

Dad of Harvard University graduate, Class of 2006

Sarah was key in helping our son and daughter choose colleges that best fit their interests and strengths, and for helping them stand out from the thousands of other applicants.  Her knowledge of college admissions made all the difference.  We were very satisfied customers.

Dad of Boston College graduate, Class of 2005, and Georgetown University graduate, Class of 2007