scrape through

verb (adverb)

(intr) to manage or survive with difficulty
to succeed in with difficulty or by a narrow marginhe scraped through by one mark

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012