Roseline Nwaoha was born in Kano State of Nigeria in the 70s. She attended Military Primary School Ikeja, Lagos from where she proceeded to Command Secondary School Kaduna for her secondary education. She studied Mathematics at the University of Ilorin, Kwara State and has a Post-Graduate Diploma in Education from Nigeria Teachers’ Institute. She also has a Masters’ Degree in Mathematics from the University of Nigeria, Nsukka.

Roseline started her teaching career in 1997 during her National Youth Service year when she taught Mathematics in all arms of the secondary school in Ibadan, Oyo State, Nigeria where she served. Her teaching career has since spanned over two decades.

Some of the schools where she has taught include; New Capital Nursery and Primary School, Abuja, Premier International School and Mea Mater Elizabeth High School, Enugu. At Mea Mater Elizabeth High School, she rose to become the Head of Mathematics Department where she inspired students and her colleagues to excellent performance in Mathematics and Further Mathematics in internal and external examinations.

She joined Deeper Life High School Enugu campus in 2013 and immediately took over the reins of leadership in the school.
Under her leadership the school produced excellent and exceptional results in WASSCE, NECO, JAMB and other external examinations.The school grew from obscurity to prominence and is still growing.

After serving as the principal of the Enugu campus for ten years, Mrs Nwaoha was transferred in April of 2023 to the Port Harcourt campus of the Deeper Life High School.
She is presently the Administrator of the Port Harcourt campus.