It's risky to have educator ring American about fourth year (11)
I believe the answer is:
treacherous
'it's risky' is the definition.
(thesaurus)
'educator ring american about fourth year' is the wordplay.
'educator' becomes 'teacher' (teacher is a kind of educator).
'ring american' becomes 'ous' (I can't justify this - if you can you should give a lot more credence to this answer).
'about' means one lot of letters goes inside another.
'fourth year' becomes 'r' (4th letter of 'year').
'teacher'+'ous'='teacherous'
'teacherous' enclosing 'r' is 'TREACHEROUS'.
'to have' acts as a link.
Can you help me to learn more?
(Other definitions for treacherous that I've seen before include "covered in ice?" , "Not to be trusted" , "Perfidious" , "Not true" , "Disloyal and untrustworthy" .)