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Marcus Jackson Sr., RRT

“I was attracted to El Centro’s program because of its accessibility, affordability and affiliations with local hospitals. The best part of my experience was the relationships I developed with fellow students and the learning experiences provided at the local clinical affiliates. 

“My education has allowed me to support my family. If we were talking about Maslow’s hierarchy of needs, it would be one of the foundational experiences that have allowed me both to meet basic needs and to expand my passions in other areas of life such as ministry. 

“The most important thing I learned is that small beginnings don’t necessarily mean small endings. Methodist Health System (which operates three hospitals in the DFW metroplex) recently hired a new CEO, Steve Mansfield, who actually began his career in health care as a respiratory therapist. 

“I feel that it is a non-negotiable to get a college degree and not settle for less. Non-college-based programs do not necessarily give you the professional skills that are required to interact with physicians and other disciplines effectively and to eventually expand your career.” 

Marcus Jackson earned an Associate in Applied Sciences degree from Cedar Valley before earning an additional A.A.S. in Respiratory Care from El Centro. In 2005, he graduated magna cum laude with a bachelor’s degree in ministry and leadership from Dallas Christian College and earned a master’s degree in New Testament from Johnson Bible College in Knoxville, Tenn., in May 2009.  In his current position, he manages day-to-day operations of a full-service hospital respiratory care department that offers 24-hour inpatient and outpatient respiratory care. His responsibilities include recruiting, training, hiring staff, budgeting, planning and operation of the department as well as maintaining accreditation of the blood gas laboratories. He previously served as team leader of the NICU respiratory care department and the neonatal transport team of Methodist Dallas Medical Center. He was ordained to the preaching ministry of the Baptist Church in 2002.


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Kim Nguyen

Oanh Kim Nguyen, MLT(ASCP)

Medical Laboratory Technician Methodist Medical Center of Dallas
“My first experience at community college was taking ESL classes at Richland and Brookhaven, which were close to where I lived. Then when I started exploring what kind of program I wanted to take for a career change, I saw Medical Laboratory Technology and transferred to El Centro ... I always tell people who are thinking about community college to think about Medical Laboratory Technology, and I tell them about my personal experience with the program. It’s a stable job, in a quiet environment with a lot less stress than many other medically related fields, and the people are very friendly and professional. I really love my job.”
English as a Second Language (ESL and ESOL), Medical Laboratory Technology
Dolores Schueler

Dolores (Dee) Schueler, BSN, LVN, RN, CRNI

Director of Nurses USBioservices
“Our instructors had high expectations and saw our potential. They let us know that it wasn’t going to be easy, but it wasn’t going to be insurmountable either.”
Nursing
Sylvia Moreno

Sylvia Moreno, BSN, RN

Director of HIV Services Parkland Hospital of Dallas
“Community college gave me everything I needed to take and succeed in classes for an advanced degree.”
Nursing
Shawn Terry

Shawn Terry, B.A., RRT, RCP

Respiratory Care Practitioner, Parkland Health and Hospital System
“Respiratory therapists are not just technicians trained to deliver treatments and therapies with different types of equipment. We have to truly comprehend a wide range of topics and how they relate to a patient’s condition.”
Respiratory Care Program
Marcus Jackson
Marcus Jackson Sr., RRT
Director of Respiratory Therapy Methodist Mansfield Medical Center

Respiratory Care Program
School of Health Sciences
Updated November 25, 2025