Bishop Kelley Softball Program Announces Coaching Updates for 2026–2027 Season
March 11, 2026
For Immediate Release
Tulsa, OK —
Bishop Kelley High School has announced updates to the Comets softball coaching staff ahead of the 2026–2027 season, promoting Zach Postoak to Head Softball Coach and welcoming Tiffany Brown as Assistant Softball Coach.
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.
Before arriving at Bishop Kelley from Owasso Public Schools, Postoak taught and coached in Oklahoma at Berryhill Public Schools and Cushing Public Schools, where he served as a head baseball coach and assistant softball coach while helping lead teams to district championships and postseason appearances. He also spent time coaching at Northwestern Oklahoma State University, where he earned his Bachelor of Science in Health and Sports Science.
“Zach has been a tremendous addition to our community,” said Bishop Kelley Athletic Director Lance Parks. “He’s already built strong relationships with our student-athletes and brings the energy, knowledge, leadership, and commitment we want leading our programs.”
Postoak expressed enthusiasm about the opportunity to lead the Comets saying, “I’m grateful for the opportunity to lead the Bishop Kelley softball program,” Postoak said. “This is a special community, and I’m excited to work with these student-athletes to continue building a program defined by hard work, teamwork, and pride in representing Bishop Kelley.”
In addition to his role with softball, Postoak also currently serves as the Interim Head Baseball Coach after stepping into the position earlier this school year.
Joining Postoak on the staff will be Tiffany Brown, who brings an accomplished collegiate playing background along with coaching and teaching experience.
A native of Catoosa, Oklahoma, Brown played at Pittsburg State University, where she established herself as one of the most dynamic offensive players in program history.
During her time with the Gorillas, Brown earned All-America honors and produced one of the most prolific offensive seasons in school history, hitting .452 while recording 90 hits, scoring 65 runs, and stealing 49 bases. Her performance ranked among the national leaders in multiple offensive categories at the NCAA Division II level.
Known for her speed, versatility, and competitive approach, Brown will assist with player development, game preparation, and continuing to build a competitive softball program at Bishop Kelley.
Brown currently serves as a health, nutrition, and physical education teacher in Catoosa Public Schools, where she also coaches softball and soccer at the middle school and high school levels. At Bishop Kelley, she will assist with physical education classes and the Blessed Stanley Rother Program for Academic Support.
“We are excited to welcome Tiffany to Bishop Kelley and the softball program,” Parks said. “She has a great playing background at Pitt State along with valuable coaching experience at the high school level. She will make a tremendous impact on our athletes and our program.”
Together, Postoak and Brown will lead the Comets softball program into the 2026–2027 season with a focus on developing student-athletes who compete with excellence, leadership, and character.
Bishop Kelley Mission
Bishop Kelley is a Catholic diocesan high school, inspired by St. John Baptist De La Salle, that carries on the teaching ministry of Jesus Christ by preparing students’ hearts and minds for a purposeful life.
About Bishop Kelley Softball
Bishop Kelley softball 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 High School
Bishop Kelley High School is Oklahoma’s largest private high school and a life-preparatory institution rooted in the Catholic tradition. The school offers a faith-based education that fosters academic excellence, spiritual growth, and personal development. Bishop Kelley features a rigorous curriculum with more than 40 honors and Advanced Placement courses across a wide range of disciplines. With an average ACT score of 28 and an average SAT score of 1260, graduates are well prepared for college, with 90 percent attending four-year institutions. More than 65 percent of Bishop Kelley students participate in athletics, reflecting the school’s commitment to developing the whole person through competition, teamwork, and leadership. The Blessed Stanley Rother Academic Support Program provides individualized assistance for students with diverse learning needs.
For Immediate Release Tulsa, OK — Bishop Kelley High School is pleased to announce the hiring of Zach Stephens as Offensive Coordinator for the Comets football program beginning with the 2026–2027 school year. Stephens joins Bishop Kelley after serving on the coaching staff at Bixby High School, one of the nation’s premier high school football programs. During his time with the Spartans, Stephens worked primarily as the varsity wide receivers coach while also serving as an offensive coordinator at the junior high level. He’s played a key role in developing players within a championship-caliber program that has captured multiple Class 6A state titles throughout his tenure. “Zach brings outstanding experience from one of the most successful football programs in the state,” said Bishop Kelley Athletic Director Lance Parks. “He understands what it takes to develop players, build strong relationships with student-athletes, and contribute to a winning culture. We’re excited to welcome him to the Bishop Kelley football family.” At Bishop Kelley, Stephens will oversee the Comets’ offensive system and contribute to the development of the program across multiple levels. In addition to coordinating the varsity offense, he will assist with freshman football, track and field, and will serve as a member of the Math Department. Stephens is widely recognized for his emphasis on offensive strategy, skill development, and fostering accountability and teamwork among student-athletes. He has strong previous experience coaching and developing wide receivers while collaborating with the offensive staff to implement structured practice plans designed to maximize player performance and execution. He holds a Bachelor of Science in Marketing Management from Oklahoma Christian University. Stephens will join the Bishop Kelley community this summer as preparations begin for the 2026 football season. Bishop Kelley Mission Bishop Kelley is a Catholic diocesan high school, inspired by St. John Baptist De La Salle, that carries on the teaching ministry of Jesus Christ by preparing students’ hearts and minds for a purposeful life. About Bishop Kelley Football Bishop Kelley Football competes in OSSAA Class 5A and forms young men of character through the discipline, brotherhood, and accountability that the game demands. Rooted in our mission, the program challenges student-athletes to pursue excellence while growing in faith, integrity, leadership, and respect for others. Comet players are called to compete with honor, support their teammates, and carry the values of Bishop Kelley long after their final game. About Bishop Kelley High School Bishop Kelley High School is Oklahoma’s largest private high school and a life-preparatory institution rooted in the Catholic tradition. The school offers a faith-based education that fosters academic excellence, spiritual growth, and personal development. Bishop Kelley features a rigorous curriculum with more than 40 honors and Advanced Placement courses across a wide range of disciplines. With an average ACT score of 28 and an average SAT score of 1260, graduates are well prepared for college, with 90 percent attending four-year institutions. More than 65 percent of Bishop Kelley students participate in athletics, reflecting the school’s commitment to developing the whole person through competition, teamwork, and leadership. The Blessed Stanley Rother Academic Support Program provides individualized assistance for students with diverse learning needs.
Bishop Kelley High School was recently named to the Gold Advanced Placement Honor Roll by the College Board . The AP Honor Roll program works to acknowledge schools around the United States that help students achieve excellence while maintaining broad access to challenging curriculum. According to the College Board, Honor Roll schools, “Reflect a commitment to increasing college-going culture, maximizing college readiness.” The award also recognizes the broad access to advanced classes especially for students in underrepresented populations. The AP Honor Roll distinguished schools in three main areas: college culture, college credit and college optimization. Seventy-two percent of Bishop Kelley students in the Class of 2025 took at least one AP class and test during their time at the school. Fifty-eight percent earned college credit by scoring at least a “3” on one AP test and thirteen percent of the class took at least five AP tests through their four years of high school. All three of these indicators show an increase from previous years for Bishop Kelley. Two hundred and fifty-seven Bishop Kelley students took a record six hundred and twenty-six Advanced Placement (AP) tests in May, 2025 with an extraordinary 85% scoring “3” or higher. Nineteen percent of Bishop Kelley test takers scored the highest possible “5” on their exams, the equivalent of “Extremely Well Qualified” according to the College Board which administers the international testing. A “5” equates to an A+ or A in college level classes. Internationally, only 9% of all tests earn a “5” score. Another thirty-six percent of Bishop Kelley students scored at the second highest tier, a “4,” equal to ”Very well Qualified,” a level only achieved by twenty percent of all testers. The record number of exams for Bishop Kelley students cover a wide range of disciplines including science, math, English, social studies, fine arts, world languages and business. The largest number of tests for Bishop Kelley students included one hundred and thirteen AP English Language and Composition students, followed by eighty-six students who took the AP United States Government test, and seventy-one who took the AP United States History exam. Bishop Kelley students scored the highest average on the second-year AP Precalculus exam with a school mean score of 4.6, followed by AP Physics I with a mean score of 4.3. In the 2024-2025 school year, Bishop Kelley offered AP tests in twenty-four different subject areas. The Advanced Placement program is sponsored by the College Board. Research has proven that students who take AP classes are more likely to enroll in and complete four-year colleges.
