Crossword Genius

A lieutenant admitted to two churches and a US college (7)

Ross

I believe the answer is:

caltech

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'a us college' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'a lieutenant admitted to two churches' is the wordplay.
'two churches' means two replacements for 'church'.
'lieutenant' becomes 'lt' (abbreviation for lieutenant).
'admitted to' indicates putting letters inside.
'church' becomes 'CE' (Church of England).
'church' becomes 'ch' (abbreviation on maps etc).
'a'+'lt'='alt'
'alt' going into 'ce' is 'calte'.
'calte'+'ch'='CALTECH'

'and' acts as a link.

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I've seen this clue in The Times.
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