Traditionally, ski instructor certification was based more on subjective assessment of form and technique rather than objective clock-based performance.
tɹɐdˈɪʃənəli, skˈiː ɪnstɹˈʌktɚ sˌɜːɾɪfɪkˈeɪʃən wʌz bˈeɪst mˈoːɹ ˌɔn sʌbdʒˈɛktɪv ɐsˈɛsmənt ʌv fˈɔːɹm ænd tɛknˈiːk ɹˈæðɚ ðɐn ɑːbdʒˈɛktɪv klˈɑːkbˈeɪst pɚfˈoːɹməns.