I am visiting an American university for a year. In my invitation letter and further instructions, it is written that I can audit any course that I want (subject to the agreement of its professor).

Since it is not common in my country, I have no idea what this auditing process is. What should I do?

Is it an official process with official report, or do I simply attend the class like students?

  • 2
    If you haven't, Google your university name and "auditing courses" (no quotes) and/or see what the student handbook says. How much work you'll have to do is up to the instructor.
    – mkennedy
    Aug 23, 2015 at 11:58
  • Related: academia.stackexchange.com/questions/37233/…
    – RoboKaren
    Aug 23, 2015 at 14:30
  • Are you only asking about US? "Auditing [a course]" means different things in different countries, and whether the university is publicy-funded or privately-funded. Also whether you have the right to audit a course, whose permission you require, how many audit courses per semester/total courseload, whether you need to be a registered student (for any other course), whether the audited classes appear on your transcript at all (with "Audit")...
    – smci
    Dec 9, 2019 at 20:24
  • ...what the process for establishing you meet prerequisites is (e.g. typically they can reasonably require "this course requires linear algebra" but can't require "you must have previously passed CS10X Algebra at this exact college in the last n semesters". Of course if you start asking 101-grade algebra questions that would be disruptive)
    – smci
    Dec 9, 2019 at 20:27

5 Answers 5


It usually means that you can sit in the lectures, but that none of your work will be graded/marked and you won't get any credit for it. Some universities have official forms that record the fact that you audited a course. Others just do it through personal consultation with the instructor.

During my first year of grad school, I audited a codes and cryptography course my senior-year undergrad friends were taking. I sat through the crypto part and then bailed on the codes. It was nice. I know a little about RSA and Elliptic Curves now. I got to hangout with my friends and I didn't have to do any work. I think I'm a better educated person for it, but it doesn't really affect my career.

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    Unfortunately at my university you have to pay to audit the course, and the price is the normal tuition rate, which is high. Aug 23, 2015 at 22:06
  • @ChrisCirefice same at mine. But depending on his funding source, that may not be a problem. At the school where I did my graduate work, fulltime for graduate students was considered 9-12 hours, and being a GTA covered fulltime. Most did 4x9 hours to complete the program, but it still left money for one official audit. Then there's the unofficial, where you just talk to the professor and sit in, but doesn't get recorded anywhere. Aug 25, 2015 at 2:58
  • @guifa I audited my university's Advanced French Grammar course off-the-books. Sometimes professors are okay with this type of audit - if you know them, it helps. Unfortunately there are 'ethical' implications due to money being involved. That's up to the lecturer though... and there's a whole political structure involved that is arbitrarily complicated and a detriment to education in general, at least in the United States. Aug 25, 2015 at 3:10

Auditing a course means a student can take classes but cannot be graded or given credit for a particular course. It is usually done for academic exploration and self-enrichment.

From Wikipedia:

In academia, an audit is an educational term for the completion of a course of study for which no assessment of the performance of the student is made nor grade awarded.


Audit has several meanings.

1a. Formal audit: costs money, but only a fraction of the normal price. On the other hand, there is no financial aid possible. You are expected to do all the work and take quizzes and tests, and you may participate in class, but there are no repercussions if you stop going or don't hand something in or take an exam. When you audit a class, there's no grade on a transcript, and no academic credit is earned.

1b. Informal audit: free. You phone, visit or email the instructor and ask if it would be okay to do an informal audit. Many instructors will accept this. Things are similar to 1a. Key difference: you wouldn't get a library card or a university computer userid.

Those are the most common ways one might talk about auditing a course. But it's possible they meant something else. If you're going to attend as part of an exchange program, it's possible they meant that you can choose whatever courses you are interested in, and have the requisite background knowledge for, without having to pay the U.S. university directly for.

I don't want you to be alarmed and assume that you will not get academic credit for the courses in the U.S. university. That might well not be what they meant. You should definitely ask them what they meant.


As I understood from several discussions here on Academia.SE it means that you can attend whatever classes you want but you are not allowed to take the exam, see e.g. this answer.

It should be noted that in several countries auditing is granted by law in public universities.

  • 1
    The point that a certain version of "auditing" is granted by law in public universities is indeed very interesting! This is a good social-political feature. It is slightly obscure to me why U.S. universities often have such a violently opposite attitude, even while k-12 education is mandated to be universal. Aug 24, 2015 at 0:44
  • 1
    @paulgarrett Why give it away for free when you can charge for it? Most American universities are full to the brim in many of their undergraduate courses. A graduate course or an upper division, non-required undergraduate course may have plenty of seats available, but for others there may literally be no chair to park their butts in. I've taught courses in lecture halls with a capacity of 250 and every last one was occupied by a (non-auditing) student. Those paying for a seat take priority over those just chilling out. Aug 24, 2015 at 2:19
  • 1
    @paulgarrett: unfortunately it's one of the many opportunities that, at least in my country, are seldom taken, even by people who would have the time to attend (another one is that people rarely uses the university libraries). Room capacity can be an issue in some courses, but only if there were a significant number of auditors. Aug 24, 2015 at 7:30
  • 1
    PS: by people in the above I mean the general public. Aug 24, 2015 at 7:46

The meaning of "audit" is very unclear, even if we restrict attention to the U.S. The other answers do attest to certain realities in certain situations, and to the variation. Perhaps to give an overview:

"Audit" at a minimum just means "hearing" the lectures. It is completely unclear whether or not you have to pay, whether or not you have to do homework, quizzes, or exams, whether or not you are allowed to do those tasks and get feedback, whether or not your official transcript will show that you "audited" the course(s), and so on.

The particular question of whether you "have to do any work" is funny. Indeed, in most audit situations, an auditor is not commanded to do anything at all. That is different from the question of whether a sensible person could see the point in engaging with the material. Truly, the model of "listening" which is almost completely passive has the virtue of very low overhead, and may be appropriate in some situation. But, if one wants more, and has the time and energy, the fact that one is not required (by external authorities) to do something does not mean that one cannot choose to do it.

For that matter, many universities' official rules (often, in the U.S., that people have to pay something to be "allowed" to attend a course, even if they make no further demands on the instructor) are not uniformly conformed-to by faculty. That is, the official description of the rules-of-the-game may not be correct at all "on the ground".

The one most likely common feature is that "auditing" a course will not provide you with any certification that you are competent or expert in the material. (We can wonder whether "good grades" ever did certify this...) Thus, if one views "education" as a process of obtaining certification, auditing is not directly purposeful. On the other hand, if one views "education" as a process of acquiring information, auditing is nearly as good as any approach, except for the possible lack of feedback from the instructor. (In fact, in many situations, the "exercises" and such are significantly make-work, exactly because the instructor is tasked with generating a steady stream of "work", so it's not clear that anyone should be terribly interested in "feedback" apart from anticipation of the eventual "grade" and/or success or failure of certification.)

  • 2
    The student doesn't always get an easy ride. Feynmann said he once audited a biology course, and the professor said he could do so provided he participated in the lecture and did all of the assigned work. I've known other cases in my own life where such a requirement was levied, for a variety of reasons. So in some cases there is no drop in the overhead for the student at all. Is this the sort of thing you mean when you mention "not uniformly conformed-to by faculty"? Aug 24, 2015 at 2:26
  • @zibadawatimmy Feynman recollection of that is quite hilarious indeed! unreasonable.org/Feynman_and_the_map_of_the_cat
    – nico
    Aug 24, 2015 at 16:02
  • 1
    In some regards I don't understand the concept of "easy ride". That is, why go to a class and not engage with it? And I do think it is perverse (though all too traditional in some circles) for "teachers" to torment students, rationalizing that "it's good for them". But, yes, one never knows what the environment will be. In graduate-level courses, I try to avoid bullying people, instead, at least in my own mind, trying to persuade, instead. Ideologies vary... Aug 24, 2015 at 16:08

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