Examiner - uptight type - assessed students in seconds (7)
I believe the answer is:
analyst
'examiner' is the definition.
(I've seen this before)
'uptight type assessed students in seconds' is the wordplay.
I cannot quite understand how this works, but
'uptight' could be 'anal' (I've seen this in another clue) and 'anal' is found in the answer.
'seconds' could be 's' and 's' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for analyst that I've seen before include "One making detailed examination" , "Freud was one" , "Person who interprets system structures" , "Psychological therapist" , "One may look at chemicals" .)