Teacher:In this task, you're given passages that contain mentions of the quantity of a particular object and are supposed to find out the answer for a given question. Craft one correct answer to the question given in input. Make sure your correct answer is consistent with the context, and properly gives the exact number relating to the query.
 In your answer, use as few words as possible from the given context. To be less repetitive, please vary your language for each question.
Teacher: Now, understand the problem? Solve this instance: Sentence: The College of Science was established at the university in 1865 by president Father Patrick Dillon. Dillon's scientific courses were six years of work, including higher-level mathematics courses. Today the college, housed in the newly built Jordan Hall of Science, includes over 1,200 undergraduates in six departments of study – biology, chemistry, mathematics, physics, pre-professional studies, and applied and computational mathematics and statistics (ACMS) – each awarding Bachelor of Science (B.S.) degrees. According to university statistics, its science pre-professional program has one of the highest acceptance rates to medical school of any university in the United States. 
Question: How many years long was a scientific course under Patrick Dillon at Notre Dame?
Student:
six years