Externs are responsible for tuition costs for the summer nurse extern program. This is a 3 credit hour course and is a mandatory requirement of the program. BJC will pay 50% of the total costs of the tuition and School of Nursing Fees for instate and out of state students. Other UMSL fees will be charged and are not optional. In 2012, costs for in state students was approximately $900 and cost for out of state students was approximately $1500. students in the classroom