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Sr. Dee Leaving at the End of the School Year

On Wednesday, September 7th, Sr. Delores Hannon announced her resignation as president of Mercy High School to the Board of Directors effective June 30th, 2023. She has served as president since 2009, having served for 14 years.

Sr. Dee, as she is affectionately known to students, faculty and parents, has overseen many changes at the school. The school facilities have experienced improvements with The Hannon Center for Academic Success, heating and cooling systems, new lockers, bathrooms, a dramatic facelift to the front offices and entryway, to name a few. By the time Sr. steps down, most of the school will have gone through some sort of renovation. Mercy High School has also experienced growth in their academic reputation. “One of the things I’m most proud of is the expectation that our students will be readily prepared for college” Sr. Delores explains. “We’ve expanded our counseling and SAT/ACT preparation, while faculty and staff have increased the expectations of what our students are capable of accomplishing. I have a very strong faith that the Mercy spirit continues to thrive through our students as they serve in their respective communities.”

Sr. Delores  has been an educator for more than 40 years. She grew up in North English, Iowa on a mixed livestock farm, the only child of William and Mary Hannon. She joined the Sisters of Mercy in 1969 and quickly was tapped for leadership in schools. She became a principal at St. Matthew’s Grade School in Kalispell, Montana, in 1978 followed by a short stint at Our Lady of Grace School in Edina, Minnesota, from 1981-1983. From 1983-1995 Sr. Dee was the principal at several grade schools in Iowa. She moved on to serve as the Vice President of the Sisters of Mercy in Cedar Rapids, Iowa, and the President of St. Edmond Catholic School in Fort Dodge, Iowa before ultimately coming to Mercy High School in 2009.

The Board of Directors will form a search committee to begin the search process in the near 

Mercy Welcomes Two New Faculty


Jim Mayberger is our new business and technology teacher.  He comes to us from OPS where he was a curriculum specialist.

He managed the Business Marketing and Information Technology, Family and Consumer Science, Skilled and Technical Science, and Robotics departments.

“I am excited to teach in a faith-based school. I really enjoy being in the classroom and I look forward to being part of the Mercy community.”




Jenna Saraka joins our math department.  She comes to us from Omaha Central, where she taught for five years.  

“I am most excited about joining a staff and community that offers strong educational opportunities and many extracurricular activities for students that are centered around faith. 

I am also excited to work with students who are eager to learn in and out of the classroom!”

Two New Hires for the Advancement Team

Sammie Emsick Becker ’05 has accepted the Director of Events position at Mercy High School and began her new role on June 13, 2022.

Since graduating from Mercy, Sammie earned a bachelor in elementary education, a certificate in Catholic School leadership, and most recently, a Master of Science in educational leadership. Outside classroom teaching, she has served as the athletic director for St. James for the past three years where, in conjunction with supervising all things athletics, annually planned the “Spring Fling” fundraiser where dollars raised went straight to the athletic program. Her most recent “Spring Fling” event set a record for money raised for St. James. She further has event planning experience by way of her time at Dundee Bank, where she was the community involvement coordinator and worked closely with various Omaha businesses to promote and grow relationships with key stakeholders of the bank via special events.

She’s married to Tyler Becker and has two boys Ty (12) and Drew (10). 
Welcome back to Mercy Sammie!

Brian Altenhofen began his new position as Director of Marketing and Communications on July 5th.

He comes to Mercy with a wealth of knowledge having earned a doctorate degree in communication and technology studies from Texas A&M University and teaching at Truman State University for the past five years. He also served as the Director of the Truman Leadership Scholars, mentoring and programming leadership experiences for Truman Scholars. Prior to his academic career he spent five years as a Jesuit Scholastic.

He is married to Michaela Cullan Altenhofen who will return to Mary Our Queen Catholic School teaching 3rd grade. They have four children Dylan (16), Lily (9), Dominic (7), and Clara (3). 



Sr. Dee: A Zeal for Education, Life and Mercy

January 16, 2019
By Deb Daley

She has been described as an adventurous, creative visionary with a heart of gold, committed to service with personality to spare.  She is also a Sister of Mercy who is celebrating 50 years with her community and is currently serving as President of Mercy High School.  Her name is Sr. Delores Hannon, RSM and her story is a fascinating journey of helping others and supporting students as an educator and administrator for more than 40 years.  

She grew up on a mixed livestock farm in North English, Iowa, the only child of William and Mary Hannon.  Much of Sr. Dee’s time was spent outdoors playing or doing chores, like milking cows.  She went to small rural public schools until college and was involved in the local church attending vacation Bible camp and studying the Catechism.   

Sr. Dee loved school and had a special aptitude for math, deciding to attend Mount Mercy University in Cedar Rapids, Iowa, to earn a degree in math.  Thanks not only to her mom and dad but to many of her extended family who provided financial support, she was able to attend college.  She also received a math scholarship. 

“Sputnik was in the news and encouraging a young woman to go to college and study math was highly desirable, so I received a substantial scholarship,” she said.

While at the university, Sr. Dee was inspired by the Sisters of Mercy who ministered there including Sister Agnes Hennessy, the president, and one of her teachers, Sister Gladys Daly, who lived on her dorm floor. 

Sr. Dee knew she wanted to live a life of service and even considered the Peace Corps.

“Mount Mercy changed the course of my life,” she said. “It was where I met the Sisters of Mercy, and I entered the community my sophomore year.  The concept of service was very appealing.  Sometimes in vocation reflections I will tell people that I was too afraid to join the Peace Corps, so I joined the Sisters of Mercy.  I have stayed with the community because of the Sisters I met, and it is the best place for me to be,” she added.

After graduating, Sr. Dee was tapped by senior leadership from the Sisters of Mercy to serve as a principal, and she was encouraged to obtain her Master’s Degree in Education.

She became a principal at St. Matthews Grade School in Kalispell, Montana, in 1978 and went on to be principal at Our Lady of Grace School in Edina, Minnesota, in 1981. From 1983 to 1995 Sr. Dee was the principal at several grade schools in Iowa.  She’s also been the Vice President of the Sisters of Mercy in Cedar Rapids, Iowa, and the President of St. Edmond Catholic School in Fort Dodge, Iowa. She became President of Mercy High School in 2009. 

“One of my greatest joys is to see what students have become -- when I knew them as kindergarteners and then the fine men and women they are today,” she said. 

Always one to dive right in, Sr. Dee as she is affectionately known, has tried many things from skydiving, (where she earned the nickname “Flying Nun”) to whale watching to horseback riding to participating in pie throwing and dunk tanks.
As one of her colleagues said, “Dee has a zest for life and is not afraid to put herself out there.” 
Since she arrived at Mercy High School, she has become the “face of Mercy” and has a long list of accomplishments.  Some highlights include:
•    Keeping the mission of Mercy at the forefront of the school’s educational commitment.
•    Providing prudent fiscal management.  She has sustained the school’s Negotiated Tuition Program, which distributed $1.8 million in tuition assistance to deserving students, and she has helped Mercy make significant infrastructure improvements including a new HVAC system and renovated science laboratories. Sr. Dee accomplished all of this while not incurring additional debt. 
•    Enhancing the awareness of and support for the school.  The school has refined its brand and increased its advancement activities. 

She has also lent her considerable educational and administrative talents to several other groups and received a number of prestigious awards. Sr. Dee is a Board member of the College of St. Mary, a Trustee of Mount Mercy University, Cedar Rapids, and a member of the Financial Advisory Committee of the Sisters of Mercy West Midwest. Last year, she received Creighton Preparatory High School’s Sword of St. Ignatius, an honor given to a person who has striven to demonstrate exemplary service for the greater glory of God.  In 2015, Mercy High School received the Greater Omaha Chamber of Commerce Business Excellence Award. Mercy is the only high school to receive this award. 

When asked to reflect on celebrating 50 years with the Sisters of Mercy, Sr. Dee said, “This commitment is a journey.  You have to continue to reflect on it and review it. One of the greatest accomplishments is each year at graduation. It is a yearly reminder of why I do what I do: support students in being their best selves.”
She is especially excited about recent efforts by the school to support students as they plan for college, and she is looking forward to developing the next phase of the Strategic Plan for the school. 

Sr. Delores Hannon will be honored at the school’s annual FIESTA on February 16, 2019.