Sally is involved with transport curriculum (8)
I believe the answer is:
syllabus
'curriculum' is the definition.
('syllabus' can be a synonym of 'curriculum')
'sally is involved with transport' is the wordplay.
'is involved' indicates anagramming the letters (involved can mean confusing or complex).
'with' says to put letters next to each other.
'transport' becomes 'bus' (bus is a kind of transport).
'sally' anagrammed gives 'sylla'.
'sylla'+'bus'='SYLLABUS'
(Other definitions for syllabus that I've seen before include "Outline of subjects included in course of study" , "Topics prescribed for a course" , "Programme for a course of study" , "Course list of subjects" , "(School) subjects" .)