Crossword Genius

Teacher's aids are terrible trouble to lift up (6)

Ross

I believe the answer is:

realia

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'teacher's aids' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'are terrible trouble to lift up' is the wordplay.
'terrible' is an anagram indicator.
'trouble' becomes 'ail' (synonyms).
'to lift up' shows that the letters should be reversed in order.
'ail' reversed gives 'lia'.
'are' is an anagram of 'rea'.
'rea'+'lia'='REALIA'

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