He then segued to talking about first meeting her when she was in second grade.
She had her first experience when she was in the ninth grade and could not stop afterward.
When I went to first grade, people would be asking me and my family—people would kind of bug out on this.
1510s, "degree of measurement," from French grade "grade, degree" (16c.), from Latin gradus "step, pace, gait, walk;" figuratively "a step, stage, degree," related to gradi "to walk, step, go," from PIE *ghredh- (cf. Lithuanian gridiju "to go, wander," Old Church Slavonic gredo "to come," Old Irish in-greinn "he pursues," and second element in congress, progress, etc.).
Replaced Middle English gree "step, degree in a series," from Old French grei "step," from Latin gradus. Railway sense is from 1811. Meaning "class of things having the same quality or value" is from 1807; meaning "division of a school curriculum equivalent to one year" is from 1835; that of "letter-mark indicating assessment of a student's work" is from 1886 (earlier used of numerical grades). Grade A "top quality, fit for human consumption" (originally of milk) is from a U.S. system instituted in 1912.
1650s, "to arrange in grades," from grade (n.). Related: Graded; grading.