If i'm not mistaken, educationally, LPN's go through about one year of vocational training to attain their title. RN's must attend about 2 years of nursing school to obtain an Associate's Degree and 4 years to obtain an Bachelors of Science in Nursing Degree. Both RN's and LPN's take many of the same classes such as, Anatomy and Physiology, Medications and safety, Medical Terminology, Basic Charting Methods, Age Appropriate Care, Cultural Sensitivity, Developmental Psychology, Developing Care Plans, Nursing Diagnoses. Each must also attend clinical experiences, in which they provide direct care of actual patients in hospitals, nursing homes and clinics for psychiatric, medical/surgical, labor and delivery and geriatric patients. However, RN's must attend classes which LPN's do not. Most of these focus on theory and administrative functions. Some of these classes are on subjects such as Biological Chemistry, Role of the Charge Nurse, Community Health. They must also take classes which are focused solely on the educational requirement toward gaining a degree, such as elective classes on arts or languages. One state used to have a requirement of a mandatory history class.
I hope this helps!