There are a few word omitted after "might" here. M' D+ ^' Q/ F$ W" E3 H
$ G8 ^+ m3 X* U) M" iImitate means "mimic", as mischievous school might (mimic) a teacher behind his/her back. 3 M+ i! }& L: I
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I would say such usage is rather common. ! L: a G( m' z& ~: I3 s5 E3 H' O) ?# \! ~- R9 f. d3 E4 B; s% L
Pan.