A4Exceptions and prohibitions
A4.1Exceptions
A candidate may offer a second language A1 instead of a group 2 subject.
Instead of a group 6 subject a candidate may offer:
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an additional subject chosen from groups 1 to 4
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further mathematics in addition to another mathematics subject (usually mathematics HL)
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computer science in addition to a mathematics subject.
A4.2Prohibitions
The status codes in section G9 provide the definitive list of circumstances that are not accepted for candidate registration in 2009 and 2010. However, attention is drawn to the following subject prohibitions that are occasionally overlooked when registering diploma candidates. The prohibitions, such as not taking two pilot subjects, do not apply to certificate candidates.
No candidate may count towards the diploma:
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the same subject at higher level (HL) and standard level (SL)
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the same language for more than one group (for example, Spanish A1 and Spanish B)
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more than one language A1 SL as a school supported self-taught subject
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environmental systems SL and biology (applies to 2009 only)
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any two of mathematics HL, mathematics SL and mathematical studies SL
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more than one school-based syllabus or pilot subject (including transdisciplinary subjects)
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a school-based syllabus and a pilot subject (including transdisciplinary subjects)
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more than one transdisciplinary subject
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text and performance SL with theatre
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text and performance SL with any course from group 1 or 2 that corresponds with the language element of text and performance
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ecosystems and societies SL with environmental systems SL or biology HL/SL (applies to 2009 only).
Specific prohibitions apply to particular school-based syllabuses. Schools are informed about such prohibitions when they are authorized to offer a school-based syllabus.