Teacher Biographies

• Veronica Iezzoni

Veronica Iezzoni, artist and art restorer, with over 25 years of experience working on projects in both the US and Italy. Education and training include degrees in Interior Design, Antonelli Institute of Art, Fine Art, College of Mount St. Joseph, and work/study training in fresco, restoration, art history, and jewelry design at Lorenzo de Medici Institute , Florence, Italy. In 2010, created a Children's Sacred Art program at Our Lady of the Holy Spirit Center, and continues to teach children and adult sacred art and restoration classes, as well as working on various art and restoration projects.

• Debby Kellner 

Debby Kellner, a retired homeschool mom of four, earned a Bachelor's and Master's degree in Community Health Education and Promotion from The Ohio State University and the University of Cincinnati, respectively. Debby has been interested in health since the 4th grade when she learned about the 5 senses . Prior to homeschooling, she taught a few health classes at UC and worked for Franciscan Hospital. Debby is excited to share her love for health! God's design of the human body is AMAZING! In her free time, she likes spending time in adoration, playing tennis/games with her family and walking with friends at the park.

• Mr. Derek Christenson

Mr. Christenson grew up in Lexington, Kentucky as the eldest child of a large Catholic family that loved sports and the fine arts.  He and his sisters were all "band geeks" and athletes, and he continues to love soccer to this day. Mr. Christenson is an alumnus of Miami University in Oxford, where he majored in both Trumpet Performance and Music History.

This is Mr. Christenson’s first year with All Saints Studies Group. He is very excited to be working with the students at ASSG!  Mr. Christenson has been an instructor at Divine Mercy from the very beginning of that co-op and is grateful for the opportunity to work with so many wonderful students over the last decade at DMHC. He continues to teach at DMHC. He has taught at co-ops for 15 years and relishes the chance to help young people grow their academic skills every year. 

Mr. Christenson and his wife, Erica, have homeschooled their four children for the past 15 years. Their eldest son graduated in 2024 from the University of Cincinnati and is about to be married. Their eldest daughter is a second-year student in the honors program at UC. Both are graduates of the Divine Mercy program. Their younger two children (twins!) will be in the 12th grade in the 2025-26 school year. The Christensons have lived in Milford for 30 years and are parishioners of St. Andrew the Apostle Catholic Church. 

• Mr. Jay Muldoon

Mr. Muldoon is a teacher of Theatre and English at Fairfield Senior High School in Fairfield, Ohio. He graduated from Bridgewater State College with a degree in Theatre, and then received his Master's in Education Administration from the University of Cincinnati. He has been an English and Theatre teacher at Fairfield Senior High School for many years. He also teaches several theatre camps for younger students.  He has taught theatre for ASSG for the past ten years. He has authored plays that communicate truths of the Faith.  Having been very involved in high school theatre, he was inspired by his teacher to seek a career in educational theatre. He is continually inspired through students' use of critical and creative thinking in order to design and perform. Both his love for teaching and theatre stem from his deep appreciation and love for children. Outside of Theatre, he coaches and co-directs the Landmark Boys Soccer team. He is a homeschooling father of six. Mr. Muldoon is a teacher, who loves talking about Jesus, discovering more about the Catholic church, building relationships and directing theatre.  His family, second only to the Eucharist, is his greatest blessing.  Oh yeah, he likes to have fun!

• Mrs. Patricia (Tish) Shefcik

 St. Gertrude Parish

Member of the Third Order of Preachers (Dominicans)

Juris Doctor from the University of Cincinnati; licensed attorney in the state of Ohio

Bachelor of Arts Wittenberg University: Business Major, accounting focus; economics minor

Tish is excited to share her passion for writing and medieval literature with high school students

in the co-op. Reading good literature and developing strong writing skills combine for thoughtful

discussion, critical thinking, engaging writing. Medieval literature in particular provides timeless

truths.

While she will use the Institute for Excellence in Writing (IEW) for both composition and

literature, Tish’s teaching will be informed by her Catholic faith. She looks forward to the

discussions of medieval literature, which is steeped in themes and references drawn from the

faith.

Tish, and her husband Bill, homeschooled their two sons, during which time she led a writing co-

op based on IEW and facilitated a co-op based on The Great Books Foundation. She remains

supportive of homeschooling, dedicated to teaching, lifelong lover of literature.

Tish hosts a long-running book club in her home, where she and others have read and

discussed classic works, including medieval literature such as Dante’s Divine Comedy and

Beowulf. More recently, Tish started a book club to read books by and about saints. She also is

a member of a Well-Read Moms book club.

• Mrs. Martha Schneider

Martha Schneider is a wife and a mother of four children.  She received her BS in Human Resource Management from Miami University's Oxford Business College.  She also earned an Associates Degree from Cincinnati State in Biotechnology. Her self proclaimed title is “A Jack of All Trades, Master of None.”

This title comes from the various roles and positions she has molded herself into through the years. She began working in Human Resources after college, then transitioned to learning how to run her family’s greenhouse business. Due to her husband’s job transfer, they needed to create a new start out West briefly, then after returning to Cincinnati, she worked at Christ Hospital in their Biomed Department. As life evolved, she again changed careers to become a homeschooling mom. 

She was not always in tune with politics and probably for the most part of her life turned away from political news.  But this all changed when she started homeschooling and when covid hit. Since that time, she has coached Biblical Citizenship classes through the Patriot Academy, supported the Convention of States grassroots movement and increased her knowledge and awareness of the founder’s genius when they crafted our Constitution and how they framed it to align with Biblical truths. She cherishes our God’s given freedoms and liberties to be able to homeschool here in America.

• Miss Jillian Leonard

Jillian is so excited to be teaching Theology at ASSG! As a proud alumni of ASSG herself :), she graduated with her BSN degree and worked in the Cincinnati Children’s ER right out of college. After a while, she felt the Lord calling her to spread His Word and Truth. She has been working in ministry for the past year, teaching students about the truth of the Catholic faith and Jesus' personal love for each person is a passion of hers. She now works full time as the youth minister for the Blessed Trinity family of parishes. When she is not working, you can find her spending time with family and friends, cooking, playing soccer, reading a good book, running, enjoying a nice fancy meal, and studying Theology of the Body. Above all, she loves spending time with the Lord in the Mass and in adoration.

• Ms. Christy Kellner 

I have a bachelor’s degree from Bowling Green University in Environmental Geochemistry where upon graduating I worked in the Solid Waste and Remedial Hazard Waste fields.  Upon starting my family, I left the corporate world and picked up the reins of homeschooling.  Over the years I have taught Civics, Lives of the Saints, American History and Sewing at All Saints Co-op. I have subbed for the All Saints Studies Group and assisted with the math for the Physical Science class. Currently I volunteer with St. Gertrude’s RCIA class, teaching about the Lives of the Saints, Catholic practices while supporting the catechumens entering the Church.  I have served as a Lincoln Douglas debate judge for high school.  I continue to pursue a love of history and the teachings of the Catholic Church. 

I am excited to join the All Saints Study Group as this year’s American History and Physical Science teacher.