“This is groovy,” said Rev. Kevin Gillespie, S.J., pastor of Holy Trinity Catholic Church, at his blessing of the temporary discotheque at Holy Trinity School on 36th Street. At Studio 36 (not 54), the April 9 disco inferno of more than 200 parents — many dressed a la 1970s and ’80s — raised more than $100,000 for the school, with help from auctioneer Martin Gammon. Edward Reno won best male costume; Kerry Myers, best female costume. Thanks to event chairs Teresa Dolan, Melissa Giuffrida and Jennifer Touchette, it was the first major fundraiser on school property in years.