Lasallian Founder's Alumni Award: Concern for the Poor and Social Justice, Sheila Grant Michie

May 26, 2023

From the Bishop Kelley Class of 1971.

Few have matched the volunteering spirit of Sheila Michie. Her work for people from all walks of life has provided light to those around her as she’s served in the Diocese and beyond.


After graduating from Bishop Kelley in 1971, Sheila attended the University of Tulsa and earned a bachelor’s degree in Education. While at TU, Sheila served with the Benedictine Sisters as a reading tutor for students from Burroughs Elementary School and then worked with Sunshine Services to provide care to those who were homebound, either elderly or disabled. Sheila also worked at Children’s Medical Center with children afflicted by severe, profound disabilities, which inspired her obtain a certification in Special Education and a degree in Education. She taught at Burroughs Elementary School with Tulsa Public Schools and then returned to her education to earn her Master’s Degree in Curriculum and Instruction and her Principal certification. She returned to education as the Assistant Principal of Burroughs and Emerson Elementary Schools and eventually Interim Principal of McClure.


After leaving Tulsa Public Schools, Sheila was inspired to begin the Women of Peace Ministry, where she led women’s retreats and became a public speaker. A new opportunity arose when she was asked to pioneer and direct a Youth Mentoring after-school program at St. Francis Xavier Church for Cleveland and Kendall Whitter school students. During that period, San Miguel School was being established, and a year later, she became the school’s religion and language arts teacher— a position she remained in for six years. She continues to be a beacon for those across the world who read her posts on her blog, Becoming Women of Peace, and through her husband’s company Empowerment Enterprise, where she and her husband, Charles, have organized and led leadership and team-building adventures and retreats with schools, churches, and other groups.


Sheila’s volunteer experience is extensive. Sheila has served on the Catholic Ministry team for the Tulsa County Jail, and as a Section Representative for the Diocese of Tulsa at the Equestrian Order of the Holy Sepulchre Southwestern United States. She is a Pentecost Today USA Council Member, and has led numerous ACTS retreats. She continues to serve as an Extraordinary Minister of Holy Communion and lector in the Diocese.


Sheila has boldly shared the word of God and allowed the Diocesan community to grow through her help in recruiting some of San Miguel’s first students, and her active involvement in too many retreats to count. Her work with the poor and vulnerable has solidified her place as a role model for all.


Lasallian Founder’s Alumni Award

Recognizing the accomplishments of Outstanding Bishop Kelley Alumni who exemplify the five core principles of the Lasallian Mission; Faith in the Presence of God, Quality Education, Concern for the Poor & Social Justice, Respect for All Persons & Inclusive Community.


If you know a deserving BK Alumni, please nominate them here:

https://www.bishopkelley.org/alumni#LasallianFoundersAlumniAwardsNominationForm

Bishop Kelley Names Zach Postoak Head Varsity Baseball Coach

May 20, 2026
FOR IMMEDIATE RELEASE Tulsa, OK - Bishop Kelley High School has officially named Zach Postoak as Head Varsity Baseball Coach following his service as Interim Head Coach during the 2025–2026 season. Postoak joined the Bishop Kelley community during the 2024–2025 school year and has quickly become an important part of both the academic and athletic departments. He began as a full-time substitute teacher before transitioning midyear to teach computer literacy while also serving as an assistant coach for both the baseball and softball programs. Prior to arriving at Bishop Kelley from Owasso Public Schools, Postoak taught and coached in Oklahoma at Berryhill Public Schools and Cushing Public Schools. During his career, he has served in both head baseball and assistant softball coaching roles, helping lead teams to district championships and postseason appearances. He also spent time coaching at Northwestern Oklahoma State University, where he earned a Bachelor of Science in Health and Sports Science. During the 2025–2026 season, Postoak stepped into the Interim Head Baseball Coach role and helped guide the Comets to a runner-up finish at the OSSAA Class 5A State Baseball Championship. “Zach has done an outstanding job leading our baseball program,” said Bishop Kelley Athletic Director Lance Parks. “This team competed at a very high level throughout the season, finished undefeated in district play, and made an outstanding run to the state championship game. We are excited to officially name Zach as our head varsity baseball coach and look forward to continuing to build on the momentum and success of this season.” Postoak expressed gratitude for the opportunity to continue leading the program. “I’m thankful for the opportunity to continue serving Bishop Kelley and leading this baseball program,” Postoak said. “This season gave our student-athletes the opportunity to grow, compete, and learn at an elite level together, and I’m excited to continue building on the foundation our players and coaching staff have established.” In addition to serving as Head Varsity Baseball Coach, Postoak was recently named Head Softball Coach for the Comets softball program. About Bishop Kelley Baseball Bishop Kelley Baseball competes in OSSAA Class 5A and is committed to developing student-athletes who pursue excellence in competition, leadership, and character. The Comets program emphasizes discipline, teamwork, and representing Bishop Kelley with pride on and off the field. About Bishop Kelley Bishop Kelley High School is Oklahoma’s largest private high school and is considered a life-preparatory institution. It offers a faith-based education that fosters academic excellence, spiritual growth and personal development. The school features a rigorous curriculum, including more than 40 honors and AP courses across a wide range of disciplines. With an average ACT score of 28 and an average SAT score of 1260, Bishop Kelley graduates are well-prepared for college, with 90% attending four-year institutions. The Blessed Stanley Rother Academic Support Program provides individualized assistance to students with diverse learning needs. Beyond the classroom, students can choose from more than 30 clubs and organizations, while athletes, academic bowl, and the speech and debate team compete in 20 OSSAA-sanctioned sports. The campus includes state-of-the-art facilities for academics, athletics, dining and the arts. Recent improvements were made possible through the successful completion of the $25 Million We Are BK capital campaign-funded entirely through private donors, not tuition dollars.

Bishop Kelley Welcomes Julia Dierker as Head Girls Golf Coach

May 20, 2026
FOR IMMEDIATE RELEASE Tulsa, Okla. - Bishop Kelley High School is pleased to announce the hiring of Julia Dierker as the school’s new Varsity Girls Golf Coach and a member of the Social Studies faculty. Dierker brings a strong combination of competitive golf experience, classroom leadership, and program development to Bishop Kelley. Most recently, she served as the Girls Varsity Golf Coach and English teacher at Broken Arrow Public Schools, where she revitalized the girls golf program and helped guide multiple student-athletes to collegiate golf opportunities. Under her leadership, the program earned back-to-back Frontier Valley Conference Runner-Up finishes, and at least one athlete committed to college golf each year. In addition to her coaching success, Dierker has experience teaching several subjects at the secondary level and will obtain her master’s degree through Northeastern State University at the end of this calendar year. She has also worked extensively in youth development and athletics programming through organizations such as First Tee-Tulsa. “Julia’s passion for mentoring young women, her competitive drive, and her commitment to helping students grow both academically and athletically make her an outstanding addition to Bishop Kelley,” said Lance Parks. “We are excited to welcome her to our community and look forward to the impact she will have on our students and golf program.” Dierker said she was drawn to Bishop Kelley because of the school’s strong academic standards, competitive culture, and mission-centered environment. “Coaching young women to lifelong improvement and success in the classroom and in sport is my passion,” Dierker said. “I admire the strong tradition of academic excellence, competitive achievement, and high standards that define Bishop Kelley, and I am excited for the opportunity to contribute to the continued success of the school and its students.” A former collegiate golfer herself, Dierker competed at both Coffeyville Community College and University of Arkansas–Fort Smith, earning Academic All-American honors and serving as team captain during her collegiate career. Dierker will begin her role at Bishop Kelley for the 2026–2027 school year. About Bishop Kelley Girls Golf The Bishop Kelley Girls Golf program has a strong tradition of competitive excellence, sportsmanship, and student-athlete development within the OSSAA. Comet golfers are challenged to grow both on and off the course through discipline, integrity, and a commitment to continual improvement. The program emphasizes individual growth while fostering a team culture rooted in accountability, encouragement, and respect for the game. Bishop Kelley Girls Golf strives to develop confident young women who pursue excellence in athletics, academics, leadership, and service while representing the mission and values of Bishop Kelley High School with pride. About Bishop Kelley Bishop Kelley High School is Oklahoma’s largest private high school and is considered a life-preparatory institution. It offers a faith-based education that fosters academic excellence, spiritual growth and personal development. The school features a rigorous curriculum, including more than 40 honors and AP courses across a wide range of disciplines. With an average ACT score of 28 and an average SAT score of 1260, Bishop Kelley graduates are well-prepared for college, with 90% attending four-year institutions. The Blessed Stanley Rother Academic Support Program provides individualized assistance to students with diverse learning needs. Beyond the classroom, students can choose from more than 30 clubs and organizations, while athletes, academic bowl, and the speech and debate teams compete in 20 OSSAA-sanctioned sports. The campus includes state-of-the-art facilities for academics, athletics, dining and the arts. Recent improvements were made possible through the successful completion of the $25 Million We Are BK capital campaign-funded entirely through private donors, not tuition dollars.