For busy students who are looking to make some extra money, these campus jobs are the best and are flexible enough to fit your busy schedule.

It can be hard to be a full-time student, keep up with extracurricular activities, and have a part-time job. It’s important to maintain good grades and participate in clubs and organizations, but  have a little extra cash in case of emergencies or you just want to go out with some friends. To be an honor roll student or a student with great academic standing, you don’t necessarily have to give up having a job for it. Here are some examples of campus jobs that are perfect for busy students.

Clerical Work-Study or Administrative Assistant. This position entails working in one of the departments of your school, including Financial Services, Enrollment and Records, Student Support and Advising, and Admissions and Recruitment. With a clerical work-study position or an administrative assistant position, you’ll be working in an office setting doing administrative tasks such as returning phone calls, scanning and faxing paperwork, and working with students. You’ll gain office and administrative experience. Typically, at the beginning of the semester, it will get busy because you’ll have students wanting to verify their schedule or make sure their financial aid is finalized. Two to three weeks after classes begin, though,, it should start to get slower. At that point, you’ll most likely get a chance to do homework during downtime—this position affords plenty of opportunities to be productive.

Computer Lab Assistant or IT Assistant. If you’re handy with computers and know how to fix routing problems, wifi issues, and other minor complications that can crop up, this is the position for you. You’ll learn technical and problem-solving skills, and it’s a great position for those who have a heavy load of classes. Of course, you’ll need to make sure you are available whenever a student needs you, but if it’s quiet and everyone is doing homework, you’ll have time to study as well.

Library Assistant. This position entails helping students find books, showing them how to cite references in APA or MLA format, and assisting librarians with tasks around the library. As in the computer lab, if no one needs help and you don’t have any assignments from your supervisor, you can use your time to work on your own assignments. You can also use this time to do any research papers that you have coming up, since you’ll have all the resources at your disposal.

Research Assistant. The requirements for this position will vary depending on your program of study. As a research assistant, you’ll serve as a point of contact for your professor, helping them analyze data  and use software to further break down the data. If you’re a research assistant in the field you are studying, you’ll learn how to carry out research in your discipline, how to find credible sources, and how to analyze details. This will also help you decide whether you really want to pursue a career in that field.

Teaching Assistant. This position is similar to being a research assistant, except you’ll also help your professor teach the class and hold office hours. Students will see you as the point of contact, so you’ll learn leadership skills and teaching skills. This position will test your knowledge of the class,  and can help you ensure that you know the material. For example, if you’re a teaching assistant for a Psychology course and your professor is letting you teach the class, outlining the subjects you’ll cover is a great way to help you memorize and understand the material.

Tutor. If you are performing well in a particular class, it’s a good idea to apply to be a tutor and help other students who are struggling. This job will provide you with teaching skills and patience. Some tutoring positions are by appointment only, while other tutors happily accept walk-ins. Some days may be extremely busy—before midterms and finals, for example—but other days may be quiet. If you have a heavy course load, you can use this quiet time to do your homework and work on any assignments that may be due tomorrow.

Tour Guide. Many high school students visit colleges before applying to figure out if they’ll like the school or not. As a tour guide, you’ll give students tours around the school and also spend much of your time planning your routes. I served as a tour guide twice a week for the entire fall semester, and in my experience, on the days that I didn’t have a tour, I would work on assignments for my supervisor or prep for the next tour. During quiet time if I was done with my supervisor’s assignments or I felt I was prepared enough for the next tour, I used my downtime to do homework. You may not have a tour every single day but will still be scheduled to come in so use those downtimes to study or catch up on homework. You’ll be getting paid to do schoolwork!

The positions listed above may be busy during peak times, but there will be often be downtime for you to do homework as well. If you’re a full-time student or you have a major assignment due, you can use this downtime to be productive while being paid to do so. There are lots of on-campus jobs available for college students, but these in particular are great for busy students who need to make the best use of every hour.