> ## Documentation Index > Fetch the complete documentation index at: https://support.lena.africa/llms.txt > Use this file to discover all available pages before exploring further. # Glossary > Definitions of key terms used across the Lena platform — academic structure, course concepts, user roles, and CBT terminology. A quick reference for terms you'll encounter throughout the Lena platform and this documentation. *** ## Academic terms | Term | Definition | | -------------------- | -------------------------------------------------------------------------------------------------------------------------------- | | **Academic session** | A full academic year (e.g., "2025/2026"). Contains terms or semesters. Only one session can be active at a time. | | **Term** | A division of the academic year in K-12 schools (e.g., First Term, Second Term, Third Term). | | **Semester** | A division of the academic year in universities (e.g., First Semester, Second Semester). | | **Active period** | The currently active term or semester. Determines which courses are visible and which academic period new courses are linked to. | *** ## School structure | Term | Definition | | ---------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------- | | **Grade** | A class level in K-12 schools (e.g., JSS 1, SS 2, Primary 3). Students are assigned to a grade. | | **Arm** | A subdivision within a grade, also called a class section (e.g., Arm A, Arm B, Science, Arts). Each student belongs to one arm within their grade. | | **Section** | A grouping of grades in K-12 schools (e.g., "Primary", "Junior Secondary", "Senior Secondary"). Used in Excel imports for bulk structure creation. | | **Faculty** | A broad academic division in universities (e.g., Faculty of Science, Faculty of Engineering). | | **Department** | A specific academic unit within a faculty (e.g., Computer Science, Mechanical Engineering). | | **Level** | A student's year of study in a university (e.g., 100 Level, 200 Level, 300 Level). | | **Matriculation number (matric number)** | A unique enrollment identifier assigned to university students (e.g., CSC/2023/001). | *** ## Course terms | Term | Definition | | --------------------- | ------------------------------------------------------------------------------------------------------------------------------------- | | **Entry code** | A short alphanumeric code that students use to join a course. Generated automatically when a course is created. Not case-sensitive. | | **Course code** | A short identifier for the course (e.g., MTH101, ENG-SS2). Primarily for teacher/admin organization. Auto-generated but customizable. | | **Draft** | A course (or exam) that has been created but is not yet visible to students. Only the creator can see it. | | **Published** | A course (or exam) that is live and visible to students. Students can join published courses and take published exams. | | **Closed / Archived** | A course whose academic period has ended. Students can still view materials and grades but cannot submit new work. | | **Grade weights** | The percentage each assessment type (assignments and quizzes) contributes to a student's overall course grade. Must total 100%. | | **Student group** | Criteria (faculty, department, level, grade, or arm) that determine which students can join a course without an entry code. | *** ## User roles | Term | Definition | | ------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------- | | **Course owner** | The teacher who created the course. Has full control, including managing collaborators and transferring ownership. | | **Collaborator** | A teacher, assistant, or student assistant added to help manage a course. See [Managing Collaborators](/teachers/managing-collaborators). | | **Teacher (course role)** | A collaborator with full access to course content and grading. Cannot manage other collaborators. | | **Lecturer** | Same as Teacher — used in university contexts. Has full course access. | | **Assistant** | A staff member collaborator with moderate access — can help manage content and assist with grading. | | **Student Assistant** | A student collaborator with limited access — can assist with basic course tasks. | | **Super Admin** | A school administrator with full access to all school operations, including managing other admins. | | **Academic Admin** | A school administrator who can manage academic structure, courses, and users but cannot manage other admins. | | **Non-Academic Admin** | A school administrator with access limited to non-academic operations. | *** ## CBT terms | Term | Definition | | -------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | **CBT (Computer-Based Testing)** | Lena's secure, timed exam system. Students take exams through a dedicated web app at [cbt.lena.africa](https://cbt.lena.africa). | | **Exam window** | The time range during which students can **start** a CBT exam (e.g., 9:00 AM to 12:00 PM). Different from the exam duration. | | **Duration** | How long a student has once they **begin** a CBT exam (e.g., 60 minutes). The timer starts when the student clicks Begin. | | **Tab-switch limit** | The maximum number of times a student can navigate away from the exam before auto-submission. Set by the teacher. | | **Auto-submission** | When the system automatically submits an exam — triggered by time expiry, exceeding the tab-switch limit, exiting fullscreen, or opening developer tools. | | **Proctor / Invigilator** | A teacher assigned by a school admin to oversee a CBT exam session in person. Proctors receive an invitation they can accept or decline, and are assigned to a specific class. | | **Exam approval** | The process where a school admin reviews and approves a CBT exam before it becomes available to students. | *** ## App terms | Term | Definition | | --------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Student App** | The Lena app for students — available on [web](https://student.lena.africa), [iOS](https://apps.apple.com/us/app/lena-student/id6739748751), and [Android](https://play.google.com/store/apps/details?id=com.lena.app.student). | | **Teacher App** | The Lena app for teachers — available on [web](https://teacher.lena.africa), iOS, and Android. | | **School Admin App** | The web-based dashboard for school administrators at [school.lena.africa](https://school.lena.africa). Desktop only. | | **CBT App** | The dedicated web app for taking CBT exams at [cbt.lena.africa](https://cbt.lena.africa). Desktop/laptop only. | | **School profile** | A connection between your Lena account and a specific school. Defines your role (student, teacher, or admin) and stores school-specific details. You can have profiles at multiple schools. | | **OTP (One-Time Password)** | A 6-digit verification code sent to your email during account creation or password reset. Expires after 10 minutes. | *** ## Related guides * [Platform Overview](/general/platform-overview) — how the four apps work together * [Academic Structure](/school/academic-structure) — setting up grades, faculties, sessions, and periods * [Managing Collaborators](/teachers/managing-collaborators) — collaborator roles and permissions * [Exam Rules & Policies](/cbt/exam-rules) — CBT exam rules explained