be up to vs make the grade

be up to

verb
  • To do or be involved in doing; to do (often something mischievous or inappropriate). 

  • To depend on, to be the choice of. 

make the grade

verb
  • To prove satisfactory; to be successful or worthy of merit. 

How often have the words be up to and make the grade occurred in a corpus of books? (source: Google Ngram Viewer )