Meet Our Nursing Instructors

Our talented instructors are veterans of the healthcare industry and experts in their respective fields.  Click on any name to learn more.

VN Instructor for Foundations and Skills

Certified in Mental Health and Social Work

Certified in Service Learning TCC

Academics in Behavioral and Social Science

PTK Delta Tau Chapter

Karen Bufe received her LVN from Brownwood Nursing School and later received her ADN/RN degree from Tarleton State University. Her nursing experience is extensive and covers a broad range of disciplines and settings. Those include hospital med/surg, emergency room, OB/GYN surgery, telemetry, renal care center, and Director of Nursing at a local nursing home. She was school nurse at Early ISD for 32 years where she was an active member of TSNO, NASN, the local Concussion Committee, and the SHAC team. Mrs. Bufe retired from Early ISD in 2017. Currently she is a teaching assistant at Ranger College and is also a BLS/Heartsaver Instructor. In her free time, Mrs. Bufe and her husband are enjoying their semi-retired status which allows them more time to visit their grandchildren.


Master of Science in Nursing, Nursing Education Emphasis, University of Texas at Arlington

Bachelor of Science in Nursing, University of Texas at Arlington

Associate of Applied Science in Nursing, Angelo State University

Vocational Nursing Diploma, Ranger College



Certified Nurse Educator (CNE)

Progressive Care Certified Nurse (PCCN)

Advanced Cardiac Life Support


Nursing Experience

Over 20 years of experience in the acute care setting with extensive experience in acute cardiac care and progressive care. Other experience includes: nurse educator, clinical data integrity RN, trauma and emergency care, medical surgical, post-surgical, psychiatric nursing, pediatrics, newborn and post-partum care.


Courses Taught

Medical Terminology

Vocational Nursing Clinicals

Multiple RN Courses Semesters I-III

Leslie Greaves is an instructor within the Associate of Applied Science in Nursing, Registered Nurse program.  She joined the Ranger College, School of Nursing team in 2019.  Mrs. Greaves has 19 years of diverse clinical and leadership nursing experience in the Central and West Texas healthcare regions. She received her Bachelor of Science in Nursing degree from Texas Tech University Health Sciences Center in Lubbock, Texas in 2000.  In 2013, she received her Master of Science in Nursing Education from Texas Tech University Health Sciences Center.  Mrs. Greaves also has an active certification in Emergency Nursing that she received in 2008.


DHed – AT Still University

BSN and MSN – Angelo State University

ADN – Amarillo College



Medical Surgical Nursing

Geriatric Nursing

Hospice and Palliative Care Nursing

Nursing Education – 17 years

Combined Nursing Experience – 36 years


My journey in nursing education (academia) began in 1991 when I was asked to join the faculty of Cisco College as a vocational nursing instructor. As a medical/surgical nurse I was able to apply my experience in the classroom and clinical settings, allowing me to guide students through their learning. The program was geared to the non-traditional student. After several years I returned to bedside nursing as an end-of-life practitioner, adding a new dimension of care to my experience as a nurse. I returned to academia and was again able to apply my experience in the preparation of traditional students in a baccalaureate nursing program. Nursing and nursing education have been a special part of my adult life. As a nurse educator I believe I have affected positive change in the profession one student at a time by emphasizing excellence in patient care. As a bedside nurse I had the opportunity and privilege of being at the bedside of patients that needed care, support, and encouragement.

Education: Master of Education, Tarleton State University at Stephenville

Bachelor of Arts in Psychology,Cum Laude, North Central College, Naperville IL

Bachelor of Science in Biology, Cum Laude, North Central College, Naperville IL

Associate of Applied Science in Nursing, Elgin Community College, Elgin, IL

Associate of Science in Biology, Elgin Community College, Elgin,IL

Emergency Medical Technician, Graham General Hospital, Graham, TX

Certification: Texas Teacher Certificates in – Biology, Psychology, Health Science Technology, Mid-Management(Principal), Anatomy and


Advanced Cardiac Life Support, American Heart Association.

Basic Cardiac Life Support Instructor Instructor, American Heart Association

Member-Phi Theta Kappa,Elgin Community College, Elgin,IL

Nursing Experience: Dallas Methodist Hospital, Coronary Care Unit, Graham General Hospital, Beverly Enterprises, Nursing and Rehabilitation


Nurse Examiner NACES & Pearson Vue

Graham ISD-Master Teacher, Science Department Chairman, Health Science Technology Chairman.

Courses Taught: Certified Nurse Assistant, Certified Medication Assistant-North Central Texas College, Ranger College

Anatomy and Physiology, Pharmacology, Mental Illness, Medication Administration, Pediatrics, Professional Nursing Competencies.

Administrative Assistant to Dean of Nursing

Welcome to Ranger College Nursing!  My name is Arja Warren, I am here to help you stay on track. You can reach me at, 325-203-5013. You can also come see me at the office.

Links and Downloads

Dean’s Welcome Letter

Associate Degree in Nursing (RN)
Bridge Program
Vocational Nursing (LVN)


Dr. Sandra Lee
Dean of Nursing

Arja Warren
Recruitment and Advising

Kathy Davis, RN
Director of Vocational Nursing Program