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Course and exam enrolment

Compulsory for all components

You must enrol for all components of your study programme, such as lectures, seminars and exams. This applies to both compulsory elements and elective credits. If you are not enrolled, you may not participate. 


Are you a full-time first-year bachelor's student, are you following a pre-master programme, or are you following courses whilst being registered at another Dutch university? If so, different enrolment procedures apply. You will receive further information by email.

Plan and enrol via MyStudymap

You can enrol via MyStudymap. In this system you can also plan your enrolments in advance. This means you can plan everything in your own time, then submit all your course enrolments in one go at the start of the enrolment period. Please note: your enrolment plan is not an actual enrolment and does not guarantee you a place. 

How does it work?

Read the explanation and FAQ about planning and enrolling in MyStudymap.



Academic year 2022-2023
For which semester Who When
First semester Bachelor & master From 15 June 2022 at 13.00
Second semester Bachelor & master From 15 November 2022 at 13.00


Academic year 2022-2023
For which semester Who When
First semester Bachelor From 12 July 2022 at 13.00
Master From 13 July 2022 at 13.00
Second semester Bachelor From 13 December 2022 at 13.00
Master From 14 December 2022 at 13.00


You can find the enrolment deadlines for each course in the prospectus. For most courses, you can enrol till maximum 14 days before the course is due to start. 

Busy periods: ticket system

During busy periods, MyStudymap makes use of a ticket system to prevent the system becoming overloaded. This works as follows: 

  • When you access MyStudymap, you will be put on a waiting list. You can see your place on the waiting list and an estimate of how long you will have to wait. You can also set up an email alert to notify you when it's your turn. 
  • Once it's your turn, you will have ten minutes in which to log in. If you don't log in, you will be allocated a new place on the waiting list. 
  • Once you are logged in, you can go ahead with your planning and enrolment.

Status of your enrolments

On the status screen in MyStudymap you can see if your enrolment has been successful. If so, you will be given access to the course environment in Brightspace and the course will appear in your personal timetable in MyTimetable. Please note: it can become very busy at the start of the enrolment period so you may have to wait a couple of hours for your enrolment to be processed.

Exams: confirm participation 

If you enrol for an exam, this is only a so-called pre-enrolment. You must also confirm participation in MyStudymap. You can do this till maximum 10 days before the exam date. You will receive a reminder to do so. If you do not confirm participation, you may not take the exam. 


Registration for lectures, exams, and tutorials

All students are required to register for all lectures, tutorials and exams. You can register via MyStudymap.

Exceptions are:

  • First-year students: As a new first-year student you do not have to register for the courses (and components) of the first semester. This is done for you by the programme together with the student administration.
  • Students following the program LST: For LST students, registration is done via the Delft system.
  • Master students: As an exception, there is no pre-registration for academic year 2022-2023. Registration is still required, but not yet before the start of a course. Note: registration for exams is required. 
  • Minor: For the courses and activities that are part of the minor program, you will be registered by the programme, after being assigned by the programme, in cooperation with the student administration. This applies to the FWN-minors.

Planning your study
Before the registration period opens, you can plan your studies for the coming semester in MyStudymap. From this planning you can register for all courses at once when registration starts. Read more about the difference between planning and enrolling.

Registering for lectures, tutorials and exams
For lectures, tutorials and exams you have to register in time via MyStudymap. Not being registered for a course can mean that you are not allowed to participate in the final exams of the course. By registering for an exam, you receive a so-called preregistration. You must confirm your participation in an exam in the student portal between thirty and ten days before the exam takes place. You will be notified of this. If you do not confirm your participation in time, you cannot participate in the exam.

Selection Minors:


Computational approach to Disease, Signalling and Drug Targets 4000MCOADN  (1102)

  • Computational approach to Disease, Signalling and Drug Targets: Part 1 4000KCAD1N (1072)
  • Computational approach to Disease, Signalling and Drug Targets: Part 2 4000KCAD2N (1073)

Modern Drug Discovery 4000MMODDN  (1150)

Molecular Biotechnology;4000MMBION  (1151)

Sustainable Chemistry and Biotechnology 4000MSCHBN  (1152)

Minors from Leiden

Biodiversity 4000MBIODN (1071)

Cyber Security Governance Essentials 4000MCSGEN (1074)

Data Science and Artificial Intelligence 4000MDSAIN  (1075)

Human Evolution 4000MHUEVN (1077)

Quantitative Biology 4000MQBION (1078)

Science, Business and Innovation  4000MSCBIN (1080)

  • Science, Business and Innovation: Management Courses 4000KSBI1N (1081)
  • Science, Business and Innovation: Entrepreneurship Courses  4000KSBI2N (1082)

Sustainable Development 4000MDONTN (1083)

LDE Minors

LDE minoren are a cooperation among the universities of Leiden, Delft en Rotterdam. 

Responsible Innovation - 5000MREIN (1046)

Geo-resources for the Future - 4000MGEORN (1076)

Space Missions - 4000MSPMIN (1148)





Some courses do not 'belong' to a certain programme of study but are for 'all' Students.

These courses are for 2021-2022: List of Faculty Courses 21-22

Course and exam enrolment Computer Science 2021-2022

To participate in Computer Science courses uSis enrolment is needed. Without timely registration, participation may become impossible and grades cannot be registered. Some courses consists of lectures only, others consists of both lectures and workgroups/practicals. If the latter is the case, you need to sign up in uSis for the workgroups/practicums as well. 

Important notes:

  • The Spring 2022 course registration period starts on December 16, 13:00 PM.
  • Contrary to many other Leiden University courses, there is no registration deadline or closing for Master Computer Science Spring 2022 courses, with the exception of exams and retakes (see below).
  • New incoming students can only sign up for courses in uSis if their Leiden University registration for the Master Computer Science is completed.
  • Enrolment in lectures, workgroups/practicals/tutorials and exams is required before the start of each semester (see instructions below). 
  • Registration for exams and retakes closes 10 days before the exam or retake date. 
  • Do not sign up for retakes automatically. Only register for retakes after not passing the exam. 

Problems signing up in uSis?

If you encounter problems with your course and exam registration in uSis, please send an email to the Science Student Administration via usis-fwn@science.leidenuniv.nl. Make sure to include your student number, study programme, the course you want to enrol in and a brief description of the problem.

How to enrol in uSis

Follow the steps below to register for Computers Science courses and exams/retakes:

  1. Login at uSis with your ULCN/Brightspace account
  2. Click on 'Main Menu' and go to 'Self Service'
  3. Click on 'Student Center'
  4. Click on 'Enrol'
  5. Enrol in one of the following ways:

1. Enrol by entering the class number

  1. Click on 'Enrol by entering the class number'
  2. Enter the class number of the course as listed in Master Computer Science Classnumbers Fall 2021 or Spring 2022 (you can also find the class numbers in My Timetable (MTT).
  3. Click on ‘Continue’
  4. The course can now be found under ‘Shopping cart’. Go to this page and select the course. Click on ‘Enrol’

2. Enrol by searching the course/using the catalogue number

  1. Click on 'Enrol by searching the course'
  2. Select the relevant academic year and click on 'Continue'
  3. Fill in the fields and click on 'Search'
  4. Courses matching your search will appear below the search field.
  5. Select the course you want to sign up for. Take note of the column ‘Description’, that indicates whether the course is an exam or a retake. Click on ‘To shopping cart’.
  6. The course can now be found under ‘Shopping cart’. Go to this page and select the course. Click on ‘Enrol’.

Note on the Catalogue numbers:

  • Catalogue no. + H = Lecture or seminar
  • Catalogue no. + W = Workgroup or practicum
  • Catalogue no. + T = Exam or retake
  • Catalogue no. + X = Other assessment method (e.g. assignments, paper or report) with fixed, 'artificial' submission dates in uSis. Final submission deadlines will be announced by the lecturer during class and via Brightspace.

My Timetable

In My Timetable (MTT) you can find the schedules of all Master Computer Science courses. You can create your own personal schedule based on your study plan by adding different course timetables. Courses you are enrolled in through uSis are automatically added in your timetable. Schedule changes are automatically implemented in your calendar, and, if you like, you can receive change notifications by e-mail. My Timetable can be easily connected to calendar apps on your smartphone.

Questions about how to use My Timetable? Read the manual and/or instruction or watch the instruction video (Dutch only). For troubleshooting, contact the ISSC helpdesk.

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