Arrange German class to accommodate lawyer (7)
I believe the answer is:
gradate
'arrange' is the definition.
(to arrange into grades)
'german class to accommodate lawyer' is the wordplay.
'german' becomes 'g' (abbreviation).
'class' becomes 'rate' (I've seen this before).
'to accommodate' means one lot of letters goes inside another.
'lawyer' becomes 'D.A.' (abbreviation for District Attorney).
'rate' going around 'da' is 'radate'.
'g'+'radate'='GRADATE'
(Other definitions for gradate that I've seen before include "Change imperceptibly" , "Shade off imperceptibly" .)