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課務組 Division of Curriculum

Taking X-Class

🎬 Video Guide: The X-Class System

X-Class Policy Overview

Students cannot enroll in time-conflicting classes. However, starting from the Fall semester of 2022, students may request to enroll in two time-conflicting classes simultaneously, provided that at least one of the courses is designated as an X-Class.

Instructors are required to submit a complete semester's worth of instructional videos if they choose to designate their course as an X-Class in the course remarks column (as illustrated below). Students may then request to attend two time-conflicting classes concurrently under specific circumstances.

X-Class Remarks Demo

The relevant information for X-Class courses can be verified directly within the course remarks. Simply use the NTHU Course Inquiry "Keyword Search" function and enter "X-Class" to filter all related courses.

Search Keyword Demonstration

Conditions & Student Responsibilities

  • To coordinate various components of course learning with the X-Class instructor—such as physical class participation, interactive discussions, practical exercises, exam scheduling, and evaluation techniques—students must fill out and submit the official X-Class Application Form.
  • Neither of the course instructors is obliged to teach extra sessions or adjust schedules to accommodate conflicts. Instructors cannot be requested to alter the dates/times of quizzes, midterms, finals, or any other examinations, provide additional make-up opportunities, or modify grading metrics if the exam schedules clash.
  • While schedule conflicts must be formally approved by the instructor, it remains the **sole responsibility of the student** to process their class registration (either via the online system or through the extra selection application).

Application Procedure

  1. Enroll in Course A (the regular, non-X-Class course) directly.
  2. Complete the X-Class Application Form and secure signatures from the instructors of Course B (X-Class). *(A signature from any one of the co-instructors is sufficient.)*
  3. Submit the completed application form to the **Curriculum Division Office**.
  4. Proceed to register for the courses online or apply via the extra selection process.

Course Selection Order & Rules

⚠️ Critical Notice: The course selection sequence must strictly follow this order: First enroll in Course A (Non-X-Class), and then enroll in Course B (X-Class).

If you perform this process in reverse (e.g., selecting Course B first, or enrolling in both A and B simultaneously without prior adjustment, or attempting to switch Course A to a new Course C later), the system will automatically trigger a time-conflict block and the request cannot be processed.

🧩 X-Class Selection Rules by Scenario

Scenario 1:
Already Enrolled in Course A

  1. Submit the completed X-Class application form to the office.
  2. The Curriculum Division updates the system to bypass the conflict check.
  3. Add Course B (X-Class) smoothly via regular online selection or extra selection.

Scenario 2:
Not Yet Enrolled in Course A

A) If both courses use Lottery Selection:

  1. Submit the form ➔ System bypasses conflict check.
  2. Add Course A first, then add Course B.

B) If B is selected via lottery but A is missed:

  1. You must Drop Course B (X-Class) first.
  2. Add Course A, then re-add Course B.

C) If both require Extra Selection:

  • Approval order is vital: Secure approval for Course A first, then Course B.
  • If B is added first, it must be dropped before A can be attached.

Scenario 3:
Changing Course A to Course C

  1. Drop Course B (X-Class) temporarily to release the lock.
  2. Successfully Add Course C into your schedule.
  3. Re-add Course B (X-Class) back into your system.
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