[Paul asked: Doesn't the 'each' automatically make the 'other' singular?]

 

"Other" functions as a regular, singular noun.  Adding 's' creates the plural.  (The other is...The others are...)

 

I think that "each" expresses a reciprocal in the phrase 'each other', which seems to be why it may be odd in the context of a group larger than two.  A reciprocal implies pairing, right?  When we use 'each other', we think of groups of two students, each reviewing the other student's paper.  And this may be the most accurate way of describing the event expressed through the sentence.

 

A different adjective that might not sound so odd may be 'one' as in 'one another'::

 

"Students reviewed one another's papers." 

 

Does this work better for those who had trouble with 'each other'?

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Linda Di