 Television critics were polarized with " Elementary School Musical " . Todd VanDerWerff of The A.V. Club gave the episode a ' C + ' grade . Although he expressed satisfaction towards many aspects of the episode , such as the character development of Lisa Simpson , VanDerWerff criticized the songs performed in the episode . In response to the appearance of Jemaine Clement and Bret McKenzie of the Flight of the Conchords , he stated : " I have no idea if the writers wrote new songs for the two guys in Flight of the Conchords to sing [ ... ] but the songs they sang were pretty weak . " Similarly , VanDerWerff was critical of the guest appearances of Michele , Riley , and Monteith , and stated : " Bringing in the Glee kids to sing a take on " Good Vibrations " that was , frankly , awful mostly just felt like an attempt to have guest stars in nothing parts so they could be promoted . In contrast , Brad Trechak of TV Squad felt that the " Elementary School Musical " was an enjoyable start to the twenty @-@ second season of the series , and retorted that the appearances of Clement and McKenzie was the highlight of the episode . Similarly , Eric Hochberger of TV Fanatic wrote , " We actually loved Bret and Jemaine doing what they do best last night : playing characterized versions of themselves . Unlike the Glee kids , our favorite duo from New Zealand were given decent songs and some pretty great lines . " Hochberger gave the episode a 3 @.@ 5 out of 5 stars . 
