Student/Cambridge/Oxbridge

1, 2.1, 2.2, 3
University results: a first is excellent (e.g. summa cum laude - top 5"pass" is next.
A-level
exams at the end of high schools, generally taken by sixth formers
O-level
exams at age 16
GCSE
general secondary-school exams: replace 0-levels + CSE
PGCE
teacher training course
bop
a student disco/dance
bedder
cleaner (Cambridge: "scout" at Oxford)
buttery, canteen
cafeteria
college/University/polytechnic
this one is tricky. If you don't go on to higher education at all, "college" means University - but "college" can also mean a polytechnic (less prestigious than a University, although they've now been renamed). Or it can mean a college at Oxbridge, the most prestigious
comprehensive school
a general school for 11-16 year olds (high school)
course
can mean a class, but can also mean a course of study (degree course)
fresher
first-year student
grammar school
a good, but public (US sense) school for 11-16 year olds (you have to sit an exam to get in)
invigilate
proctor an exam, or supervise a library etc.
lecturer
a University faculty member - professor means something else (q.v.): there are also "readers" at Oxbridge, which is a little higher (?) than a lecturer
marks
grades
maths
mathematics
NatSci, CompSci, mathmo ...
(Camb.) (pron. "natsky", "compsky") natural science student; computer science ditto; mathematics student
Oxbridge
Oxford and/or Cambridge
porter
(Oxbr.) A college employee, something more than a custodian: A college employee, something more than a custodian: responsible for groundskeeping, keeping undergraduates in line, frightening away tourists, etc. The Porter's Lodge is something like the front office of the college.
postgrad
grad. student
professor
an exalted title: equiv. to an endowed chair or head of Department
public school
a posh private school (Eton, Harlow, etc.)
results
exam grades
revise
to study for exams
sit (an exam)
to take an exam
sixth form
the last two years of secondary school ("lower sixth/upper sixth"): only for people going to University: sometimes done at a 6th-form college
squash (2)
(Camb.) a student society initial meeting/social
supervision
(Camb.) tutorial, "section"
swot
to study, a grind
sprog
(derogatory) undergraduate, youngster