All continuing students are expected to pre-register online through WebSIS for the upcoming terms. Students pre-register in May for summer session and the fall term and in December for IAP and the spring term.

Advisors should be available to answer questions from students while they are pre-registering. While students are not required to meet with their advisors before pre-registering, it can be helpful to do so, especially if the student is changing his or her plan of study. Academic advisors do not formally approve subject selections at this time, but may access their advisees' pre-registration on WebSIS. Changes to this preliminary choice of subjects may be made online throughout pre-registration.

Students wishing to take subjects with limited enrollments for which there are special pre-registration processes (subjects in the Sloan School of ManagementCI-H/HW subjects, and a few other designated subjects) should be careful to follow the published directions and deadlines. Students must pre-register to participate in these enrollment processes.

Details about the procedures and deadlines for pre-registration are published on the Registrar’s Office web site.


In planning the academic program for each term, students should examine their overall progress toward fulfilling both their departmental and Institute requirements by their expected term of graduation. They should take care to complete subjects with outstanding Incomplete, O, or OX grades. Students are strongly encouraged to submit their registration forms before classes begin to ensure accurate class enrollments. Registration dates and deadlines are available in the Academic Calendar.

All students are expected to meet with their advisors to discuss subject selection. Many of these meetings may occur on Registration Day. However, students and advisors can begin using the online registration system when it opens (usually the week before registration day). At the registration meeting, the advisor and the student should review the student's progress in fulfilling the General Institute Requirements and the departmental requirements for the degree. Once student and advisor agree upon subject enrollment for the term, the advisor should approve the selections in the online registration system. The student is responsible for completing the registration process and should submit the digital form promptly after meeting with the advisor, no later than the Friday of the first week of the term, after which there is a penalty.

The registration form represents the agreement between the student and the department regarding the student's program of study for the term. By submitting the registration form the student acknowledges responsibility for tuition and other charges for that term and agrees to abide by the standards of performance and behavior set out in the Mind and Hand handbook, the Academic Integrity Handbook and other published Institute policies

Careful review of requirements is especially important in the case of a fourth-year student. A student intending to receive an SB degree must submit an online application for the Bachelor of Science Degree at the beginning of the term in which he or she expects to graduate.

If a student is on registration hold, both the student and advisor can make changes to subject selections online, and the advisor can submit his/her approval. However, a student cannot submit his/her registration until arrangements are made to clear the hold. If the hold is cleared after Add Date (fifth week) the student must petition the Committee on Academic Performance to be allowed to register.

The Registrar’s Office website has extensive information regarding registration. Topics include:


As they select subjects, students should look ahead to subsequent terms and decide when to take any outstanding prerequisites. Before taking a subject, a student should complete any prerequisite(s) listed in the MIT Subject Listing and Schedule for that subject. (Co-requisites, which are listed in italics, are to be taken concurrently.) For policies regarding prerequisites, see the MIT Bulletin.

Credit Limits

First-Year undergraduates may register for and receive at most 54 credit units in the fall term and 57 credit units in the spring term (Faculty Rule 2.63.3). Physical Education classes and ROTC subjects do not count toward these limits. See the CAP website for additional information.

Students with Reduced Loads

Carrying a registration load of less than full-time (36 units) can affect a student's end-of-term academic performance review, financial aid, loan deferments, compliance with immigration regulations, eligibility for varsity athletics, and external insurance requirements. Upperclass students who complete fewer than 36 units are automatically flagged for end-of-term academic review by their departments and the Committee on Academic Performance (CAP).

Students who have been awarded financial aid should consult with Student Financial Services (SFS) about possible adjustments in financial aid. MIT grant funds are reduced by the same amount as tuition is reduced. Students taking less than a half-time registration load (18 units) are not eligible for aid for living costs. Taking less than a half-time registration load can trigger requirements for repayment of current loans and affect eligibility for new loans.

International students are required by immigration regulations to be registered full-time whenever school is in session. Students with questions about their loads should check with the International Students Office (ISO).

Students must be registered full-time to be eligible for varsity athletics. Only seniors in their last terms who have submitted degree applications can have registration loads of less than full-time. Contact the DAPER Administration Offices.

The Registrar's Office reports registration load when students request enrollment certification letters. External insurance providers may consider registration load in determining eligibility or rates for automobile, medical, or other types of insurance.

Additional information is published on the Registrar’s web site.

Light-Load Tuition Adjustment

Full tuition is charged for a registration load of 32 units or more. A regular undergraduate who is registering for fewer than 32 units is charged on a per-unit basis for all subjects including those taken as a Listener and ROTC subjects. The student is charged on a prorated basis for subjects dropped during the term. See the tuition tables published by the Registrar's Office for current tuition charges.

Tuition charges are adjusted after Drop Date unless the student files a “Tuition Adjustment-Light Load” form, available as a pdf. The form must be submitted to the Student Services Center (SSC) or the Registrar's Office, prior to the end of the fifth week of the term. The form is optional for a fourth-year student who wishes to register for thesis only, or who is on the degree list for the end of the current term. If the student decides to take less than 32 units, the student may apply for a tuition adjustment before or at the beginning of the term.

The light-load tuition option is not available to students who are (or were) in engineering internship and cooperative programs.

Students are permitted no more than two terms on light load as undergraduates. Exceptions to this policy may be requested by petition to the Committee on Academic Performance (CAP). Students seeking such exceptions may wish to discuss their situations with deans in Student Support Services (S3).

Submission of the “Tuition Adjustment -Light Load” form does not constitute registration. Each student must also complete all steps of registration as usual in order to retain status as a student.

Registration Holds

There are several types of registration hold that will prevent a student from registering for classes. Students on hold cannot register until they make arrangements with the office that placed the hold.

Financial: Students may not register if they have outstanding charges from a prior term or a current past-due student loan. See complete information in the MIT Bulletin.

The Committee on Academic Performance will entertain a petition from a student formerly on financial hold for late registration only with the recommendation of a majority of a committee made up of the Director of Financial Aid, the Registrar, and the Director of Student Support Services, or their delegates.

Medical: All students registering at MIT for the first time, or returning to MIT after an absence of a year or longer, must have an up-to-date medical report on file in the MIT Medical Department. Students who have not completed this requirement will not be allowed to register. See the Student Medical Report form page.

International: New international students must sign up for and attend one of the immigration information sessions sponsored by the International Students Office (ISO). Failure to check in with the ISO will result in a registration hold.

FSILG: Students who have failed to pay their bills for fraternities, sororities, and independent living groups are placed on hold by the FSILG Office. See the policy in the Mind and Hand Book.

Dean's Hold: Students should contact Student Support Services (S3) about Dean's Holds, which are of two general types.

A Student Life Hold is placed when it is determined that a student poses a risk to the health or safety of him or herself or of others, or the student is unable to participate appropriately in campus life. The Senior Associate Dean for Students places this hold in consultation with MIT Medical and Student Support Services.

An Academic Hold is placed on a student who presents serious, unaddressed concerns in an academic setting. The Senior Associate Dean for Undergraduate Education places this hold in consultation with faculty and Student Support Services.

Status of Registration Report

It is the student's responsibility to carefully review his or her status of registration report on WebSIS to make sure that it accurately reflects his or her subject registration and, if it does not, to make the necessary change in registration using the Online Add/Drop form by the appropriate deadline.

Note that WebSIS is the only official record of registration. Obtaining access to a subject website in the Stellar course management system is not the equivalent of registration.

Registration Changes after the Add and Drop Deadlines

Permission to make changes after add and drop deadlines have passed must be requested by petition to the Committee on Academic Performance (CAP). See the academic calendar for current deadlines.

See the CAP website for general information on the petition process and directions about petitions to

  • Add a Subject
  • Drop a Subject
  • Declare a Subject Sophomore Exploratory
  • Remove a Subject from Sophomore Exploratory Status
  • Change Sophomore Exploratory Subject from Credit to Listener
  • Change Grading from Letter Grades to Junior/Senior P/D/F
  • Change Grading from Junior/Senior P/D/F to Letter Grades
  • Change Subject Registration from Credit to Listener
  • Change Subject Registration from Listener to Credit

Students must also petition CAP to register after a financial hold is cleared, if the hold is cleared after Add Date. A $100 late registration fee is applied in these cases.

Undergraduates have three months after graduation to petition for late changes to their final terms' registrations only in the following situations:

  • To drop subjects which they did not attend and for which they received unearned Fs or missing grades
  • To add subjects which they attended but for which they did not register