score (OES).
These grades can be weighted according to their level, and combined to calculate the classification of a degree. An undergraduate degree will weigh level 3 modules twice as much as level 2, and in postgraduate programmes, all M-level modules are equally weighted.
=== Qualifications ===
==== Undergraduate ====
Open University modules have associated with them a number of Credit Accumulation and Transfer Scheme (CATS) credits – usually 30 or 60 – depending on the quantity of the material in the module and a level (1, 2, 3, or 4) corresponding to the complexity, with 120 credits roughly equating to the year of study for a full-time student.
The OU offers a large number of undergraduate qualifications, including certificates, diplomas, and bachelor's degrees, based on both level and quantity of study. An OU undergraduate degree requires 300 (or 360 for honours) CATS credits.
Students are generally advised not to undertake more than 60 credits per year, meaning that an undergraduate degree will take typically six years to complete. With the exception of some degrees in fast-moving areas (such as computing), there is generally no limit on the time that a student may take. Students need special permission to take more than 120 credits (equivalent to full-time study) at any time; such permission is not usually granted.
Originally the BA was the only undergraduate degree, and it was unnamed. The modern OU grants degrees of Bachelor of Arts (BA), Science (BSc), Laws (LLB) and Engineering (BEng); the BA and BSc may be named (following a specified syllabus) or unnamed (constructed of courses chosen by the student) degrees.
Many OU faculties have now introduced short modules worth ten credits. Most of these modules are taught online and start at regular intervals throughout the year. They typically provide an introduction to a broader subject over a period of ten weeks, these are generally timed during vacations at conventional universities in order to take advantage of their facilities. Some science modules, …