ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd fˈoːɹɾi fˈaɪv ðə nˈuːmɚɹəl vˈæljuːz wɜːɹ ˈædᵻd ɪn ˈɔːɹdɚ tʊ ɛnˈeɪbəl ðə kˌælkjʊlˈeɪʃən əvən ˈævɹɪdʒ ɡɹˈeɪd ˈɔːlsoʊ ðə dʒˈiː wʌz nˈeɪmd ðə mˈɪnɪməm pˈæsɪŋ ɡɹˈeɪd.
In 1845 the numeral values were added in order to enable the calculation of an average grade – also the g was named the minimum passing grade.