Our Staff

Oro Valley, Arizona

Dennis O’Reilly - VP OF RELATIONS

Dennis O’ReillyMr. O’Reilly started working with young people as a volunteer junior high basketball coach back in 1990, and has been in education for over twenty years, starting as a middle school math teacher back in 1993. Mr. O’Reilly has been an administrator since 1999 serving as Curriculum Coordinator, Assistant to the Principal, Principal, and Head of Schools at three different private schools in Tucson, Arizona and earned his Master’s Degree in Educational Leadership from Chapman University. Mr. O’Reilly has been married for sixteen years to his beautiful bride Krissy, and will have two scholars attending Leman Academy, Conner and Adeline.


Shelby Romero - Preschool Director

Shelby Romero
Shelby Romero has served at Leman Academy’s Preschool in Oro Valley since the doors opened in 2017. Much of her career started in the classroom, both preschool and 1st grade. After a year of being the assistant director of preschool, she is privileged to take on the director role. Having earned her Bachelor’s Degree in Organizational Leadership with a focus in education, from Arizona State University, in 2014. Mrs. Shelby, alongside her husband and two children (a daughter, and son), enjoy going to ropings and being around family. She looks forward to partnering with families to make the preschool experience one of the best!


Hilary Benitez - Preschool Assistant Director

Hilary Benitez

Hillary Benitez has served at Leman Academy’s Preschool since July 2018. After a year teaching in the preschool classroom, she is excited to take on the role as the Assistant Director. She earned her Bachelor’s Degree in Psychology from Central Christian College of Kansas in 2014. Much of her career has been working with children and families, including an after-school program, nannying, case management, parent education/early childhood development and teaching preschool. She is excited for this opportunity to partner with parents and provide a wonderful preschool experience.




Ramona Barth

Ramona Barth has been a Pre-K teacher at Leman Academy since January of 2018. She’s also the girls’ middle school basketball coach. She started her career as a Pre-K teacher in 2006 after earning her Associates Degree in Child Development from Washington State. She has held many roles throughout her career including teaching art and being an assistant director here in Tucson. Her experience has taught her that her heart is in the classroom.

In her spare time, Ramona enjoys spending time with her husband, 2 children, painting and cooking. She is passionate about her Leman Academy scholars and partnering with their families to create a warm, loving and academically rich environment. She is thrilled to be part of a team of incredible educators.



Misty Hill

Misty was born and raised in Texas and lived there most of her life until moving to Tucson in 2016. Misty has been with Leman Academy since it opened in 2017. She started in the younger 3’s classroom and is excited to start her upcoming year in the 4’s class.

In her free time, Misty enjoys taking trips and exploring the beauty of Arizona. She also enjoys decorating as a hobby. Even though Misty will always consider Texas home, she thinks Arizona is incredibly beautiful and she is proud to call it her home now. Misty looks forward to her third year here at Leman Academy and working with the scholars and their families.



Celeste Mace

Celeste Mace has been working with children for over 5 years now, and has a passion for working with young scholars. She started at Leman Academy Oro Valley in 2017 in the after school program and made the transition to preschool in 2018. Celeste is currently in school and hopes to continue with her commitment of working with children by becoming a pediatric nurse. She enjoys singing, and spending time with family and friends. Celeste is excited for a year of partnering with families and building strong relationships.



Katherine Perry

Katherine Perry was born and raised in Tucson, Arizona. Most of Miss Katherine’s career has consisted of working with families and children. This is Katherine’s first year with Leman Academy and she is excited to be working in the 3’s classroom.

Miss Katherine enjoys taking trips with her husband and their two children to the ocean. In her free time, Miss Katherine enjoys making slideshows of family and friends. Miss Katherine looks forward to her first year here at Leman Academy and working with the scholars and their families.



Sally Reubens

Sally was born in North Carolina. She earned her Bachelor's Degree in Early Intervention with a concentration in Early Childhood Education from East Carolina University in 2012. She has a true passion for teaching and watching children grow and learn. Sally has been a member of Leman Academy Preschool, Oro Valley since the doors opened in 2017. Sally enjoys spending time with her family and friends.

As a family, her husband and their fur baby enjoy hiking, traveling to the beach, and cooking. It is an honor for Sally to be part of the Leman Academy team and she is very enthusiastic to be working with scholars and families.



Cherie Sharkey

Ms. Sharkey was born and grew up here in Tucson. She earned her Early Childhood Education degree in 2018 and has an American Sign Language Associates degree. She has been an active member of the Leman Academy preschool through volunteering her time in the classrooms. She enjoys spending time with her family and daughter who is a Leman Scholar. As a family, they love gold panning, camping, caving, and boating at various lakes around Arizona. She is honored to be a part of the Leman Academy team and is enthusiastic about working with the scholars and families.