By Dr. Toshua Cornwell-Clark
There are moments in life when achievement becomes larger than the individual. For my sister, Dr. Keisha Cornwell-McKinney, and me, earning our Doctor of Education (Ed.D.) degrees in Organizational Innovation from National University’s Sanford College of Education was one of those moments.
But our story is not simply about degrees. It is about legacy.
Recently, I visited Dr. John Warren, publisher of The San Diego Voice & Viewpoint, to share our journey as “The Cornwell Sister Doctors.” During our conversation, Dr. Warren reflected on the work of his late wife, Mrs. Gerri Warren, who helped recruit many of the first Black students to attend National University.
When I shared that my sister and I had both earned doctoral degrees from National University, he smiled with pride and surprise. In that moment, something I had always known was reaffirmed within me: our success did not begin with us. It was built upon the sacrifices, labor, courage, and vision of Black people who came before us. The ones who opened doors during times when those doors were never intended for us to walk through.
Mrs. Gerri Warren helped light the pathway. We simply walked through the doors she helped open.
As two Black women, we understand that education has always been more than personal accomplishment within our community. Education has historically been resistance. It has been survival. It has been liberation.
Black people in America have been stripped, excluded, displaced, and denied access in countless ways throughout history. Yet one thing that continues to endure is the power of the Black mind. Knowledge, innovation, scholarship, creativity, and education remain forms of inheritance that cannot be stolen.
We are married to that understanding. That is why this moment matters.
Today, Dr. Keisha Cornwell-McKinney continues her work at Lincoln High School as a mathematics educator, teaching finance math while advocating for financial literacy and helping communities understand pathways toward equity and empowerment. Many throughout San Diego may remember her leadership as Lincoln High School’s former Mathematics Department Chair and Senior Prom Coordinator. In 2022, I wrote an article for The Voice & Viewpoint titled “She Put the Unity in the Community,” after she raised more than $25,000 in just 24 hours to ensure students could experience their senior prom despite financial barriers.
As for me, I serve as a professor at San Diego City College and hold California state licensure in Cosmetology, Barbering, and Esthetics. I am also a sociologist, researcher, author of Eternal Black Eye, and creator of the sociological framework “The Colonial Costume,” which examines internalized racism, identity performance, and Eurocentric beauty standards within the Black community. My work uniquely bridges cosmetology and sociology, incorporating beauty education, mindfulness, self-prioritization, and restorative practices as pathways to help BIPOC communities unlearn and heal from the enduring injuries of colonialism.
Together, we also founded Sister Sister L.Y.N.N., an organization named in honor of our mother, Lynn. L.Y.N.N. stands for “Learning You’re Not Negotiable.” Through mentorship, beauty education, academic support, and community resources, the organization works to support underserved youth while reminding them that their value is not conditional.
This is Black excellence. Not perfection. Not performance.
But perseverance, purpose, scholarship, service, and sisterhood.
Our story is also a story about what it means to truly understand the phrase, “I am my sister’s keeper.” In a world that often attempts to divide Black women, we chose partnership. We chose support. We chose to celebrate one another’s victories rather than compete for limited space at the table.
I am my sister’s keeper, and she is mine.
And now, as two Black women with doctoral degrees, we carry a responsibility greater than ourselves. We carry the torch lit by our ancestors, educators, activists, dreamers, mothers, fathers, and community leaders who believed future generations deserved more.
Our responsibility is to keep that torch burning brightly enough to light the path for those coming behind us.
That is the true meaning of legacy. That is the story of The Cornwell Sister Doctors.
