Japanese school getting hot in its most elevated points (7)

'most elevated points' is the definition.
'zeniths' can be an answer for 'points' (zenith is a kind of point). I am not sure about the 'most elevated' bit.

'japanese school getting hot in its' is the wordplay.
'japanese school' becomes 'zen' (Japanese school of Buddhism).
'getting' means one lot of letters go next to another.
'hot' becomes 'h' (abbreviation eg on taps).
'in' indicates putting letters inside.
'h' put inside 'its' is 'iths'.
'zen'+'iths'='ZENITHS'

Can you help me to learn more?