Which Introductory Course Should I Take?

Before continuing, please read the Brown CS 2020-21 Plan, which may replace some of the information below.

Brown CS offers eight introductory courses in computer science. Here's a quick guide on how to choose which one to take. You can also watch this video, an overview given by the faculty of CS 111, CS 15, CS 17, CS 19, and the Director of Undergraduate Studies.

For Potential Concentrators

Those planning to concentrate (major) in computer science should take one of CSCI0150/0160CSCI0170/0180CSCI0190, or a sequence starting with CSCI 0111, as explained below,  Neither CSCI0150, CSCI0170, nor CSCI 0111 assume prior programming background. They prepare students for subsequent courses in the concentration, but with different approaches and some differences in content. The descriptions below outline the differences: to help you decide between them, you might attend the first lectures of both courses. CSCI0190 is an accelerated course that students must place into over the summer.

CSCI 0111 provides a somewhat leisurely paced introduction to programming and is ideal for students who are taking other time-consuming courses at the same time. Students in CSCI 0111 may decide to do additional work that, while increasing the load of the course, prepares them for CSCI 0180, which they may then take in a subsequent semester. Alternatively, students who have completed CSCI 0111 may continue on with CSCI 0112, which maintains the pace of  CSCI 0111. Students completing CSCI 112 may continue with CSCI 0180, and then go on to take other courses in the CS concentration. CSCI 0111 was offered in fall 2020. We plan to offer it in both fall and spring 2021/2022.

For Non-Concentrators

Note that CSCI 0020 does not satisfy prerequisites for other first-year programming courses. They do not count towards a CS concentration. They do not count towards the new Data Fluency certificate for non-concentrators (nor do they satisfy prerequisites for the new DATA 0200 course within that certificate). Students who want to continue into the CS concentration after taking one of these courses will need to start over with 0111, 0150, 0170, or 0190. Accordingly, students who are considering a CS concentration are advised to start with one of the introductory courses for concentrators.

Placement Based on Prior Background

Brown CS does not offer credit for AP or IB courses. Students with prior background can either take the placement exam for CSCI0190 (offered only during the summer) or take CSCI0150/0170 (the style of programming in CSCI0170 is sufficiently different from that used in AP that many students with prior experience find it rewarding). Students may not simply skip CSCI0150/CSCI0170 and start in the next course. If you are a transfer student or have taken intro CS at another college, contact the one of the directors of Undergraduate Studies to determine your placement.

Summary of the Courses


CSCI0020, offered in the fall, is for students who want an introduction to the use of computers that does not involve much programming. It is intended primarily for humanities concentrators and may not be used as part of a CS concentration. This course offers a broad view of the digital world and acquaints the student with a variety of applications and the underlying theory that drives them. Students can expect to get a broad perspective on computing history and future trends as it applies to many current day activities and issues.

csci0111 & csci0112

CSCI 0111/0112 is a two-course introductory sequence designed to provide students with more flexibility in exploring CS within their overall academic program.  111 was only offered in Fall, 2020 and those who took it and passed the "bridge" assignments may get placement for 180. Those who didn't pass the bridge assignments may go on to 170 this spring or take 112 next fall.

The first course focuses on data: how we program with it, sanity-check it, and organize it depending on the computational problem at hand. The course combines basic data science content (though not statistics) with core data structures and algorithms from CS. Students work in a combination of programming languages (Pyret and Python) to begin to learn how different programming tools are suited to different tasks. Collaboration is welcome on most assignments.

Direct questions to the professors: Doug Woos, douglas_woos@brown.edu, or Kathi Fisler, kfisler@brown.edu.

csci0150 & csci0160

CSCI0150/0160 is a two-course spring/summer sequence that emphasizes programming practice in the spring (0150) and theoretical foundations in the summer (0160). CSCI0150 is a challenging object-oriented programming course (using Java) in which students gain experience with object-oriented design techniques and the use of Java-FX, Java's 2D graphics library. Basic data structures (arrays, lists, stacks, queues, trees) are covered as well. Students will design and implement a sequence of moderate to fairly lengthy interactive programs, including Tetris, a fascinating computer game. All programs use graphical user interfaces. While the course uses games as a motivating domain, this is not a course in game design, and the techniques and skills learned are equally applicable across other domains.

In CSCI0160, students learn the theoretical tools used to analyze computation and make programs more efficient. A number of fundamental algorithms and data structures are covered, as well as their implementations. Programming is in Java and (some) Python.

Direct questions to the professors: Andy van Dam, avd@cs.brown.edu (CSCI015) or Doug Woos, douglas_woos@brown.edu (CSCI0160).

csci0170 & csci0180

CSCI0170/1080 is a two-course sequence (spring/summer, although 180 is also being offered in Spring, 2021) that integrates learning programming with learning the theoretical foundations of computer science. In the fall semester (0170), students learn how to break problems down into elegant and concise programs using functional programming (in Racket and ReasonML). Functional languages have a gentle learning curve, while differing from the styles of programming that students typically see in high school. The course introduces both practical and theoretical techniques for assessing how well programs satisfy their requirements.

In the spring semester (0180), students learn additional key data structures and algorithms of computer science, while broadening their programming skills to include object-oriented programming (first in Java, then in Scala, a language which combines functional and object-oriented programming). Helping students learn to solve problems in multiple programming styles, and choose languages appropriate to a task, is one of the main goals of this sequence.

Direct questions to the professors: John Hughes, jfh@cs.brown.edu (CSCI017) or Kathi Fisler, kfisler@brown.edu (CSCI0180).


CSCI0190 is offered in the fall. It compresses much of the first-year curriculum into a single semester by spending significantly less time on fundamentals of programming. Students cannot enroll directly into CSCI0190; instead they must qualify for it by taking a placement exam administered the summer before. (The placement is self-contained, so even students with no prior computing background are welcome to try it out.) Additional information is available on the CSCI 0190 home page.

Taking CSCI0190 does not reduce the total number of courses that a student must take for a CS concentration. Students will take an additional course (of their choosing) to act as the second course of their introductory sequence. Many students go on to take CS0180 after CS0190, especially if they did not have a strong grounding in object-oriented programming prior to starting at Brown.

Direct questions to the professor: Shriram Krishnamurthi, sk@cs.brown.edu.