Historical clue formulations

• Equivalent of a 1.3 G.P.A., say — 2026-01-07
• Not *quite* a failure — 2022-02-18
• Just below C level? — 2021-05-19
• It's not C-worthy — 2020-11-12
• Not quite a C — 2020-02-18
• 67-69, gradewise — 2018-05-08
• Bad mark — 2018-01-12
• Figure in the high 60s — 2016-08-06
• Poor passing grade — 2016-07-25
• Grade to be concerned about — 2016-07-24
• It's just below C level — 2016-01-26
• Pretty poor grade — 2013-08-26
• Figure in the high 60s — 2011-03-05
• Bad mark — 2009-10-09
• Bad mark — 2008-02-08